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(1)

RESUMEN DE LA TEORÍA

Derivada en un punto:

( )

h 0 f a h

(

) ( )

f a

f ' a lim

h →

+ −

=

Función derivada:

( )

h 0 f x h

(

) ( )

f x

f ' x lim

h →

+ −

=

Principales derivadas:

( )

f x =k f ' x

( )

=0

( )

f x =x f ' x

( )

=1

( )

n

f x =x f ' x

( )

= ⋅n xn 1−

( )

x

f x =e f ' x

( )

=ex

( )

x

f x =a f ' x

( )

=a ln ax

( )

f x =ln x f ' x

( )

1

x

=

( )

a

f x =log x f ' x

( )

1 log ea 1 1

x x ln a

= ⋅ = ⋅

( )

f x =sen x f ' x

( )

=cos x

( )

f x =cos x f ' x

( )

= −sen x

( )

f x =tg x

( )

2

2 1

f ' x tg x 1

cos x

= = +

( )

f x =arcsen x f ' x

( )

1 2 1 x

= −

( )

f x =arccos x f ' x

( )

1 2 1 x

− =

( )

f x =arctg x f ' x

( )

21 x 1

= +

Propiedades:

(

f g ' x±

) ( )

=f ' x

( )

±g' x

( )

(

k f x⋅

)( )

= ⋅k f ' x

( )

(

f g ' x⋅

) ( )

=f ' x g x

( ) ( ) ( )

⋅ +f x g' x⋅

( )

( )

( ) ( ) ( )

( )

( )

(

)

2 f ' x g x f x g' x f ' x

g g x

⋅ − ⋅

⎛ ⎞ =

⎜ ⎟ ⎝ ⎠

(

f g ' xD

) ( ) (

= f ' g x g' xD

)( )

( )

(2)

EJERCICIOS Y PROBLEMAS RESUELTOS

Ejercicio 1:

Calcula aplicando la definición de derivada f’(2), siendo f(x) = 3x2

Solución:

En este caso la fórmula es:

( )

(

) ( )

h 0

f 2 h f 2 f ' 2 lim

h →

+ −

=

Como:

(

)

(

)

(

)

( )

2 2 2

2

f 2 h 3 2 h 3 4 4h h 12 12h 3h f 2 3 2 3 4 12

+ = ⋅ + = ⋅ + + = + +

= ⋅ = ⋅ =

Por tanto:

( )

h 0 f 2 h

(

) ( )

f 2 h 0

(

12 12h 3h2

)

12 h 012h 3h2 h 0

f ' 2 lim lim lim lim 12 3h 12 3 0 12

h h h

→ → → →

+ + −

+ − +

= = = = + = + ⋅ =

Ejercicio 2:

Calcula aplicando la definición de derivada f’(3), siendo f(x) = x 1+

Solución:

En este caso la fórmula es:

( )

(

) ( )

h 0

f 3 h f 3 f ' 3 lim

h →

+ −

=

Como:

(

)

( )

f 3 h 3 h 1 4 h

f 3 3 1 4 2

+ = + + = +

= + = =

Por tanto:

( )

(

) ( )

(

(

) (

)

)

(

)

(

)

h 0 h 0 h 0 h 0

h 0 h 0

4 h 2 4 h 2

f 3 h f 3 4 h 2 4 h 4

f ' 3 lim lim lim lim

h h h 4 h 2 h 4 h 2

h 1 1 1 1

lim lim

2 2 4

4 h 2 4 0 2

h 4 h 2

→ → → →

→ →

+ − ⋅ + +

+ − + − + −

= = = = =

⋅ + + ⋅ + +

= = = = =

+

+ + + +

⋅ + +

Ejercicio 3:

Calcula aplicando la definición de derivada f’(1), siendo f(x) = 1 x

Solución:

En este caso la fórmula es:

( )

(

) ( )

h 0

f 1 h f 1 f ' 1 lim

h →

+ −

=

Como:

(

)

( )

1 f 1 h

1 h 1

f 1 1

1

+ =

+

= =

Por tanto:

( )

h 0 h 0 h 0 h 0

(

)

h 0

1 1 1 h h

1 h 1 1

1 h 1 h 1 h 1 h

f ' 1 lim lim lim lim lim 1

h h h h 1 h 1 h 1 0

→ → → → →

+ −

− −

+ + + +

= = = = = = = −

(3)

Ejercicio 4:

Calcular, aplicando la definición, la función derivada de f(x) = x3

Solución:

Como:

(

+

) (

= +

)

3 = 3+ 2 + 2+ 3

f x h x h x 3x h 3xh h Por tanto:

( )

(

) ( )

(

)

(

)

→ → → →

+ +

+ − + + + − + +

= = = = =

= + + = + ⋅ + =

2 2

3 2 2 3 3 2 2 3

h 0 h 0 h 0 h 0

2 2 2 2 2

h 0

h 3x 3xh h

f x h f x x 3x h 3xh h x 3x h 3xh h

f ' x lim lim lim lim

h h h h

lim 3x 3xh h 3x 3x 0 0 3x

Ejercicio 5:

Calcular, aplicando la definición, la función derivada de f(x) = x2 + 5x

Solución:

Como:

(

+

) (

= +

)

2+

(

+

)

= 2+ + 2+ +

f x h x h 5 x h x 2xh h 5x 5h Por tanto:

( )

(

) ( )

(

)

(

)

(

)

→ → →

→ → →

+ + + + − +

+ − + + + + − −

= = = =

+ +

+ +

= = = + + = + + = +

2 2 2 2 2 2

h 0 h 0 h 0

2

h 0 h 0 h 0

x 2xh h 5x 5h x 5x

f x h f x x 2xh h 5x 5h x 5x

f ' x lim lim lim

h h h

h 2x h 5 2xh h 5h

lim lim lim 2x h 5 2x 0 5 2x 5

h h

Ejercicio 6:

Comprueba, aplicando la definición, que si f(x) = ln x, entonces f’(x) = 1 x

Solución:

Como:

(

)

(

)

f x h+ =ln x h+

Por tanto:

( )

h 0

(

) ( )

h 0

(

)

h 0 h 0 h 0 h

h

h 0

h

x h ln 1

ln

f x h f x ln x h ln x x x h

f ' x lim lim lim lim lim ln 1

h h h h x

h ln lim 1

x

→ → → → →

− →

⎛ ⎞

+ +

+ − + − ⎝ ⎠ ⎛ ⎞

= = = = = + =

⎝ ⎠

⎛ ⎞

= +

⎝ ⎠

Ahora bien: h 1

x h 0

h

lim 1 e

x − →

+=

⎜ ⎟

⎝ ⎠

Luego:

( )

h 1x

h 0

h 1

f ' x ln lim 1 ln e

x x

− →

⎛ ⎞

= + = =

(4)

Calcular la derivada de las siguientes funciones:

( )

= 5

f x x

( )

4

f ' x =5x

( )

f x =11

( )

f ' x =0

( )

f x = x

Como f x

( )

= x =x12

( )

=1 21 = 1

f ' x x

2 2 x

( )

1

f x x

=

Como f x

( )

= 1=x−1

x ⇒

( )

− −

= − 2 =

2 1 f ' x 1x

x

( )

3

f x =5 x

( )

2 2

f ' x = ⋅5 3x =15x

( )

4

1 f x

x

=

Como

( )

4

4 1

f x x

x −

= = ⇒

( )

5

5 4 f ' x 4x

x

− −

= − =

( )

4

f x = x

Como f x

( )

= 4x =x14

( )

3 4

4 3

1 1

f ' x x

4 4 x

= =

( )

5 3

f x = x

Como

( )

3 5 3 5

f x = x =x ⇒

( )

2 5

5 2

3 3

f ' x x

5 5 x

= =

( )

3

f x =2x5 x

( )

2 2

f ' x = ⋅2 3x − ⋅ =5 1 6x −5

( )

5 4

f x =x3x +2x

( )

4 3 4 3

f ' x =5x − ⋅3 4x + ⋅ =2 1 5x −12x +2

( )

1

f x 5 x x

= +

( )

( )

2

2 1 f ' x 5 1 1 x 5

x −

(5)

( )

4 f x = x +2x

( )

1 3

f ' x 8x

2 x

= +

( )

7 7

f x =x +x

( )

6 8

f ' x =7x 7x−

( )

4

3 7 f x 2x

x

= −

( )

3

( )

4 3

4 21 f ' x 2 4x 7 3 x 8x

x −

= ⋅ − − = +

( )

7

f x = 10 3x+

( )

6 6

f ' x = + ⋅0 3 7x =21x

( )

6 3 2

f x =5 x3 x+2 x

( )

5

3

3 4

f ' x 30x

2 x 3 x

= − +

( )

=

f x x x

Como f x

( )

= x x = x x2 = 4x3 =x43

( )

1 4

4

3 3

f ' x x

4 4 x

= =

Calcular la derivada de las siguientes funciones utilizando las reglas del producto y la división:

( )

3

f x =xx

( )

2 3 1 2 x3 3x 2x x2 3 6x3 x3 7x3 7 52 7 5

f ' x 3x x x 3x x x x

2 2

2 x 2 x 2 x 2 x 2 x

⋅ + +

= ⋅ + ⋅ = ⋅ + = = = = =

NOTA: Esta derivada y todas los del producto se pueden hacer también operando primero la función (pero el

problema nos pide utilizar la fórmula del producto):

( )

( )

1 7 5

3 3 2 2 7 2 7 5

f x x x x x x f ' x x x

2 2

= ⋅ = ⋅ = ⇒ = =

( )

5 3

f x =xx

( )

5 3 5 3

5 2 5 2

3 3x

f ' x 1 x x x

5 x 5 x

= ⋅ + ⋅ = +

( )

2

(

)

f x =x3x 2

( )

(

)

2 2 2 2

f ' x =2x 3x 2⋅ − +x 3 6x⋅ = −4x 3x+ =9x −4x

( )

(

2

)

f x = x +2xx

( ) (

)

(

2

)

1

(

)

(

x2 2x

)

(

2x 2 2x

)

(

x2 2x

)

5x2 6x

f ' x 2x 2 x x 2x 2x 2 x

2 x 2 x 2 x 2 x

+ + + + +

= + ⋅ + + ⋅ = + ⋅ + = =

( )

8 8

f x =xx

( )

7 8 8 7 8 8 7 8 8

8 7 8 7 8 7 8 7

1 x 8x 8x x 65x

f ' x 8x x x 8x x

8 x 8 x 8 x 8 x

⋅ +

(6)

( )

4

(

)

f x =3x1 x

( )

3

(

)

4

( )

3 4 4 3 4

f ' x =12x ⋅ 1 x− +3x ⋅ −1 =12x −12x −3x =12x −15x

( )

22

x 1

f x

x 1

− =

+

( )

(

) (

)

(

)

(

)

(

)

2 2 2 3

2 2 2

2 2 2

2x x 1 x 1 2x 2x 2x 2x 2x 4x

f ' x

x 1 x 1 x 1

+ − − + +

= = =

+ + +

( )

3

4 f x

2x x

= −

( )

(

)

(

)

(

)

2 2

2 2

3 3

4 6x 1 24x 4

f ' x

2x x 2x x

− − +

= =

− −

( )

3x 4

f x

5 2x

+ =

( )

(

) (

)( )

(

)

2

(

)

2

(

)

2

3 5 2x 3x 4 2 15 6x 6x 8 23

f ' x

5 2x 5 2x 5 2x

− − + − − + +

= = =

− − −

( )

2

1 f x

5x

=

( )

( )

2 2 3

10x 2

f ' x

5x 5x

= =

( )

5 3

2x f x

x x

= +

( )

(

)

(

)

(

)

(

)

(

)

5 3 4 2 5 3 5 3 5 3

2 2 2

5 3 5 3 5 3

2 x x 2x 5x 3x 2x 2x 10x 6x 8x 4x

f ' x

x x x x x x

+ − + +

= = =

+ + +

( )

x

f x

2x 3

= +

( )

(

)

2

(

)

2

(

)

2

2x 3 x2 2x 3 4x

3 2x

2 x 2 x

f ' x

2x 3 2x 3 2 x 2x 3

+ + −

= = =

+ + ⋅ +

( )

42

4x 1 f x

2x 1

+ =

+

( )

(

) (

)

(

)

(

)

(

)

3 2 4 5 3 5 5 3

2 2 2

2 2 2

16x 2x 1 4x 1 4x 32x 16x 16x 4x 16x 16x 4x f ' x

2x 1 2x 1 2x 1

+ − + + +

= = =

+ + +

( )

32

x x 10 f x

x x 1

+ +

=

+ +

( )

(

)(

) (

)

(

)

(

)

(

(

)

)

(

)

2 2 3 4 3 2 4 3 2

2 2

2 2

4 3 2

2 2

3x 1 x x 1 x x 10 2x 1 3x 3x 4x x 1 x x 2x 21x 10

f ' x

x x 1 x x 1

2x 2x 2x 20x 9 x x 1

+ + + − + + + + + + + − + + + +

= = =

+ + + +

+ + − −

=

(7)

( )

+ − =

+ 2 1 x 1 x f x

1 x

( )

(

) (

)( )

(

)

(

)

(

)

(

)

2

2 2 2

2 2

1 1 x 1 x 1

1 x 2

f ' x

1 x 1 x 1 x

− − + −

= =

+ − +

( )

= + + 2 1 x

f x 1 x

1 x

( )

(

)

(

)

(

)

(

)

(

)

(

(

)

)

(

)

2 2

2

2 2 2 2 2

3 2

2 2 2

2 2

1 1 x 1 x 2x 1 x x 2x 1

1 x 1 x

1 1 x

1 x 1 x 1 x 1 x 2( x x x 1)

f ' x

1 x

1 x 1 x

1 x 1 x

+ +

+ − + ⋅

+

+ + + + +

⎝ ⎠

= = =

− −

⎛ ⎞ ⎛ ⎞

+ ⎟ ⎜ +

⎝ ⎠ ⎝ ⎠

Calcular la derivada de las siguientes funciones:

( )

x

f x =4e

( )

x

f ' x =4e

( )

x

f x =e +5

( )

x

f ' x =e

( )

= x

f x 7

( )

x

f ' x =7 ln 7⋅

( )

= ⋅ x

f x 3 8

( )

x

f ' x = ⋅3 8 ln 8⋅

( )

2

f x ln x

=

( )

2 2

1

0 ln x 2 2

x f ' x

ln x x ln x

⋅ − ⋅

= =

( )

3 ln x

f x 5

⋅ =

( )

3

f ' x 5x

=

( )

=

f x 4 log x

( )

4

f ' x log e x

= ⋅

( )

= log x2 f x

5

( )

2

1

f ' x log e 5x

(8)

( )

f x = ⋅2 sen x

( )

f ' x = ⋅2 cos x

( )

f x =sen x 6+

( )

f ' x =cos x

( )

cos x

f x 10

=

( )

sen x

f ' x

10

− =

( )

2

f x =cos x x+

( )

f ' x = −sen x 2x+

( )

f x = ⋅6 tg x

( )

(

2

)

2 6 f ' x 6 tg x 1

cos x

= ⋅ + =

( )

3

f x =tg x 2x+

( )

(

2

)

2 2

2 1

f ' x tg x 1 6x 6x

cos x

= + + = +

Calcular la derivada de las siguientes funciones utilizando las reglas del producto y la división:

( )

3 x

f x =xe

( )

2 x 3 x

f ' x =3x e⋅ +x e⋅

( )

xx

e 1

f x

e 1

+ =

( )

(

) (

)

(

)

(

)

x x x x x

2 2

x x

e e 1 e 1 e 2e

f ' x

e 1 e 1

− − +

= =

− −

( )

x

f x =e ln x

( )

x ex

f ' x e ln x x

= ⋅ +

( )

f x =x ln x

( )

1

f ' x 1 ln x x ln x 1 x

= ⋅ + ⋅ = +

( )

x

f x ln x

=

( )

(

)

2

ln x 1 f ' x

ln x

(9)

( )

ln x

f x x

=

( )

2

1 ln x f ' x

x

− =

( )

f x =tg x cos x

( )

(

2

)

f ' x = tg x 1 cos x tg x sen x+ ⋅ − ⋅

Aplicar la regla de la cadena para calcular la derivada de las siguientes funciones:

( )

2

f x = x +1

( )

12 2x

f ' x 2x

2 x 1 x 1

= ⋅ =

+ +

( ) (

)

2

f x = 3x 2

( )

(

)

(

)

2

f ' x =2 3x 2 3 6x 3x 2− = − =18x −12x

( )

(

2

)

3

f x = x +1

( )

(

2

)

2

(

2

)

2

f ' x =3 x +1 ⋅2x=6x x +1

( )

(

2

)

3

f x = xx +x

( )

(

)

(

)

(

)

3 2

2 2

x x

f ' x x 3 x x 2x 1

2 x

+

= + ⋅ + +

( )

(

)

2

1 f x

5 x 2

= +

( )

(

)

(

)

(

)

(

)

2

4 3

0 5x 2 1 2 5x 2 5 10

f ' x

5x 2 5x 2

⋅ + − ⋅ + ⋅ −

= =

+ +

( )

(

)

2

2 2

x 1

f x

x 1

− =

+

( )

(

) (

) (

)

(

)

(

(

) (

)

)

(

)

(

)

2

2 2 2 2 2 3 3 3

4 3 3 3

2 2 2 2

2x x 1 x 1 2 x 1 2x 2x x 1 x 1 4x 2x 2x 4x 4x 2x 6x f ' x

x 1 x 1 x 1 x 1

+ − − + + − − + + +

= = = =

+ + + +

( )

x

f x =ln e

( )

x

x 1

f ' x e 1

e

= ⋅ =

( )

ln x

f x =e

( )

ln x 1 eln x f ' x e

x x

= ⋅ =

( )

5 x 2

f x =eln x

( )

5x 2 5x 5x 2 5x

2

2x 2e

f ' x 5e ln x e 5e ln x

x x

(10)

( )

2 3x f x ln

1 5x

= +

( )

(

)

(

)

(

(

)

)

2 2 2

2 2

2 2

3 1 5x 3x 10x 1 5x 10x 1

f ' x

3x 1 5x x 1 5x

1 5x

+ − ⋅ + −

= ⋅ =

+ +

+

( )

(

)

f x =sen x cos x

( )

(

)

(

(

)

)

(

) (

)

f ' x =cos x cos x⋅ ⋅ 1 cos x x⋅ + ⋅ −sen x =cos x cos x⋅ ⋅ cos x x sen x− ⋅

( )

f x =sen cos x

Como f x

( )

=sen cos x=sen cos x

(

)

⇒ f ' x

( )

=cos cos x sen x

(

)

( )

2

f x =sen x

( )

2

f ' x =cos x 2x⋅

( )

2

f x =sen x

Como f x

( )

=sen x2 =

(

sen x

)

2 f ' x

( )

=2sen x cos x

( )

2 2

f x =tg x

( )

2

(

2 2

)

f ' x =2tg x ⋅ tg x +1 2x

( )

(

)

f x =tg tg x

( )

(

2

(

)

)(

2

)

f ' x = tg tg x +1 tg x 1+

( )

(

)

f x =arctg tg x

Como f x

( )

=arctg tg x

(

)

=x ⇒ f ' x

( )

=1 También se puede obtener:

( )

(

)

2

(

2

)

1

f ' x tg x 1 1

tg x 1

= ⋅ + =

+

( )

2 3

f x =arctg x tg x

( )

3 2

(

2 3

)

2

4 2x

f ' x tg x arctg x tg x 1 3x x 1

= ⋅ + ⋅ +

+

( )

3

f x =ln sen x

( )

3 2

3 1

f ' x cos x 3x

sen x

= ⋅ ⋅

( )

(x3 x)2 f x =e

( )

(x3 x)2

(

) (

)

3 2

(11)

( )

2 3 f x =ln x

( )

3 2

3 1 f ' x 2ln x 3x

x

= ⋅ ⋅

( )

(

x2 1

)

2 f x = e + +1

( )

(

x21

)

x21

f ' x =2 e + +1 e + 2x

( )

f x =arctg sen cos tg x

( )

(

)

2

(

)

(

2

)

1

f ' x cos cos tg x sen tg x tg x 1

sen cos tg x 1

= ⋅ 〈 − ⋅ +

+

( )

x2

f x =ln sen e

( )

2 2 2 2

2

2 2

x x

x x

x

x x

1 1 xe cos e

f ' x cos e e 2x

sen e sen e 2 sen e

= ⋅ ⋅ ⋅ ⋅ =

( )

x

f x =arctg ln sen e

( )

(

x

)

2 x x x

1 1 1

f ' x cos e e

2 x sen e

ln sen e 1

= ⋅ ⋅ ⋅ ⋅

+

( )

5 3

(

2

)

2

f x =sen cos 4x +1

( )

(

4 3

(

2

)

2

)

(

3

(

2

)

2

)

(

2

(

2

)

2

)

(

(

2

)

2

)

(

2

)

f ' x = 5sen cos 4x +1 ⋅ cos cos 4x +1 ⋅ 3 cos 4x +1 ⋅ −sen 4x +1 ⋅2 4x +1 8x⋅

( )

3 4

(

6

)

5

f x = ⋅2 tg ln x +7

( )

(

2 4

(

6

)

5

)

(

2 4

(

6

)

5

)

(

3

(

6

)

5

)

(

)

(

6

)

4 5

5 6

1

f ' x 6 tg ln x 7 tg ln x 7 1 4ln x 7 5 x 7 6x

x 7

= ⋅ + ⋅ + + ⋅ + ⋅ ⋅ + ⋅

+

( )

( )

2 2 x 12x

3 3 1 x

f x ln arct e

+ −

=

( )

( )

( ) ( )

( )

( )

( )

(

)

(

)

(

)

2 2 2

2 2 2

2 2 2

2 2 2

x 12x x 12x x 12x

2 3 1 x 2 1 x 1 x

2

x 12x x 12x x 12x

3 1 x 3 1 x 1 x

2

2 2

1 1 1

f ' x 3ln arct e 3arct e e

arct e 2 arct e e 1

1 2 x 12x 2x 12 1 x x 12x

2 1 x 1 x

+ + +

− − −

+ + +

− − −

⎛ ⎞

⎜ ⎟

=⎜ ⎟⋅ ⋅ ⋅ ⋅ ⋅ ⋅

⎛ ⎞

⎜ ⎟ ⎜

⎠ ⎜ ⎟

⎝ ⎠ +

⎜ ⎟

⎜ ⎟

⎝ ⎠

+ + − − +

− ⋅

(12)

EJERCICIOS PROPUESTOS

1) Calcular aplicando la definición, las siguientes derivadas en un punto:

1) f x

( )

=5 en x = 2 2) f x

( )

= −4 en x = 0 3) f x

( )

=x en x = 3 4) f x

( )

=2x en x = –1 5) f x

( )

= −1 x en x = 0 6) f x

( )

=7x 4− en x = 3 7) f x

( )

=3x2 en x = –2 8) f x

( )

= −5x2 en x = 5 9) f x

( )

=x2+3 en x = 2 10) f x

( )

=2x27 en x = 6 11) f x

( )

=x2+x en x = –1 12) f x

( )

=3x x 2 en x = 4 13) f x

( )

=x2+ +x 1 en x = 1 14) f x

( )

=3x22x 1+ en x = 0 15) f x

( )

=x3 en x = 1 16) f x

( )

= −2x3 en x = –1 17) f x

( )

=x3+3x en x = –5 18) f x

( )

=x35x2+1 en x = 3 19) f x

( )

= x 5+ en x = 4 20) f x

( )

= 2x en x = 8 21) f x

( )

1

2x

= en x = 5 22) f x

( )

4

x 1

=

+ en x = 1

2) Calcular, aplicando la definición, la función derivada de:

1) f x

( )

=8 2) f x

( )

= −4

3) f x

( )

=x 4+ 4) f x

( )

=4x 3−

5) f x

( )

=8x 6) f x

( )

= −6x

7) f x

( )

= −1 x 8) f x

( )

= −3 2x 9) f x

( )

=4x2 10) f x

( )

= −7x2 11) f x

( )

=x2+3 12) f x

( )

= −1 x2 13) f x

( )

=3x2+5 14) f x

( )

= −4x23 15) f x

( )

=5x2+2x 16) f x

( )

=9x26x 17) f x

( )

= −3x22x 18) f x

( )

=2x2+7x 19) f x

( )

=4x2+3x 2 20) f x

( )

=x26x 11+ 21) f x

( )

=2x3 22) f x

( )

= −4x3 23) f x

( )

=2x3+1 24) f x

( )

=3x34 25) f x

( )

=x3+2x 26) f x

( )

=5x37x 27) f x

( )

=2x3+x2 28) f x

( )

= −3x3+2x2 29) f x

( )

= x 2+ 30) f x

( )

= x 1−

31) f x

( )

2 x

= 32) f x

( )

3

x

− =

33) f x

( )

1 4x

= 34) f x

( )

3

5x

(13)

3) Calcular la derivada de las siguientes funciones:

1) f x

( )

=2 2) f x

( )

3) f x

( )

= −5 4) f x

( )

= 12

5) f x

( )

=x8 6) f x

( )

=x125

7) f x

( )

=x−4 8) f x

( )

=x−37

9) f x

( )

=x125 10)

( )

3 7 f x =x 11)

( )

5 9

f x =x− 12)

( )

7 2 f x =x− 13) f x

( )

=7x 14) f x

( )

= −9x 15) f x

( )

=3x6 16) f x

( )

=5x11 17) f x

( )

= −2x5 18) f x

( )

= −4x7 19) f x

( )

=5x−2 20) f x

( )

=8x−3 21) f x

( )

= −5x−5 22) f x

( )

= −4x−9

23) f x

( )

=3x74 24)

( )

2 5 f x =5x 25)

( )

1 2

f x =6x− 26)

( )

5 8 f x = −4x− 27) f x

( )

15

x

= 28) f x

( )

16

x

=

29) f x

( )

43 x

= 30) f x

( )

77

x

− =

31) f x

( )

37 5x

= 32) f x

( )

84

11x

− =

33) f x

( )

36 x−

= 34) f x

( )

105

x−

=

35) f x

( )

=12 x 36) f x

( )

= −6 x 37) f x

( )

4 x

3

= 38) f x

( )

2 x

5

=

39) f x

( )

= 9x 40) f x

( )

=14x 41) f x

( )

=5 x6 42) f x

( )

= −3 x6 43) f x

( )

= 7x5 44) f x

( )

=12x8 45) f x

( )

= 3x8 46) f x

( )

=3x5 47) f x

( )

=9 x8 5 48) f x

( )

=5 x7 10 49) f x

( )

= −4 x6 5 50) f x

( )

= −4x3 51) f x

( )

12 x5 12

5

= 52) f x

( )

3 x3 7

10

− =

53) f x

( )

1 x

= 54) f x

( )

4

x

=

55) f x

( )

1 3 x

= 56) f x

( )

7

11 x

=

57) f x

( )

61 x

= 58) f x

( )

45

x

=

59) f x

( )

13 9 x

= 60) f x

( )

65

7 x

=

61)

( )

5 7

1 f x

x

= 62)

( )

3 4 2 f x

x

=

63)

( )

7 2 1 f x

4 x

= 64)

( )

3 5 3 f x

5 x

(14)

4) Calcular la derivada de las siguientes funciones:

1) f x

( )

=3x 4− 2) f x

( )

=5x2+10 3) f x

( )

=4x2+3x 4) f x

( )

=7x x 2 5) f x

( )

2x3 7x2

5 3

= + 6) f x

( )

2x7 4x5

7 5

= −

7) f x

( )

2x6 5 3

= 8) f x

( )

7x2 3x5

4

− =

9) f x

( )

=5x3+10x26 10) f x

( )

=x72x5+3x 11) f x

( )

1x4 4x3 7

3 6

= − + 12) f x

( )

3x6 2x4 5x2

7 8

= − + −

13) f x

( )

=2x5− +x 2 14) f x

( )

4x3 1x 5

5 3

= − +

15) f x

( )

= 3x4+2x3+5 16) f x

( )

3x4 3x3 2x2

4 5

= + −

17) f x

( )

=x3+x−2 18) f x

( )

=x5x−5 19) f x

( )

=2x33x−4 20) f x

( )

=5x−7+3x5 21) f x

( )

=2x−3+7x−5 22) f x

( )

= −3x−9+11x−7 23) f x

( )

5x2 1

x

= − 24) f x

( )

3x 5

x

= +

25)

( )

6 5 1 f x 5x

x

= − 26)

( )

4

4

1 3

f x x

3 x

= −

27)

( )

1 2 2

f x =x +x 28)

( )

1

3 2

f x =8x −5x

29) f x

( )

=x2+x72 30)

( )

5

4 2

f x = −5x +3x 31)

( )

3 3 8

f x =x +x 32)

( )

2 5 5 5

f x 7x x

2

= − −

33) f x

( )

=x6x117 34)

( )

12

4 5

7 11

f x x x

5 4

= −

35)

( )

3 2 7

f x =x +x− 36)

( )

4

2 5

f x =5x −4x− 37) f x

( )

x11 x 174

= + 38) f x

( )

11x4 4x37

3

= +

39) f x

( )

=3x2+ x 40) f x

( )

=2 x x+ 4 41) f x

( )

=9x3+3x 42) f x

( )

=4 x 2x5 7 43) f x

( )

= x3 +10x4 44) f x

( )

2x6 3 x7

5

= −

45) f x

( )

=x4+3x4 46) f x

( )

=3x64 x7 4 47)

( )

4

3 1 f x 3x

x

= + 48)

( )

7

5

2 4

f x x

7 x

= −

49)

( )

9 9 4

1 f x 4x

x

= + 50)

( )

12

12 7 12 f x x

x

= −

51)

( )

4 3 11

1 f x x

x

= − + 52)

( )

8

5 13 4 f x 3x

x

= − −

53)

( )

3 5

5 3

x 1

f x

6 12 x

= + 54)

( )

7 10

9 4

4 x 3

f x

10 8 x

(15)

5) Calcular la derivada de las siguientes funciones utilizando las reglas del producto y la división: 1) f x

( )

=x4 x 2) f x

( )

=2 x x 7

3) f x

( )

=x5 x9 4) f x

( )

= −3x2 x5 5) f x

( )

=x44x 6) f x

( )

=7x75x 7) f x

( )

= ⋅x 7x2 8) f x

( )

11x6 3x4

4

= ⋅

9) f x

( )

= x3x 10) f x

( )

= −8 x8x 11) f x

( )

= 3x x3 12) f x

( )

=5 x55x 13) f x

( )

= 4x3 x 14) f x

( )

2 x 7x3

3

= − ⋅

15) f x

( )

= 9x2 x9 16) f x

( )

79x11 x3 5

= ⋅

17) f x

( )

= 7x5x 18) f x

( )

= −3 x4 6x 19) f x

( )

= 4x55x4 20) f x

( )

63x4 8x11

7

= ⋅

21) f x

( )

=x3

(

2x 3

)

22) f x

( )

=2x5

(

4 x

)

23) f x

( )

= −x4

(

x3+1

)

24) f x

( )

2x2

(

4 x3

)

7

= ⋅ −

25) f x

( )

=3x4

(

x2+5x 2

)

26) f x

( )

= −3x5

(

2 3x 5x + 2

)

27) f x

( )

=

(

x33x

)

x 28) f x

( )

= −5 3x

(

22

)

x 29) f x

( )

= x3

(

x27

)

30) f x

( )

3

(

2x 5

)

x7

4

= − ⋅

31) f x

( )

=

(

x36x

)

4x 32) f x

( )

26x 3x x

(

4

)

5

= ⋅ −

33) f x

( ) (

= 1 4x

)

5x4 34) f x

( )

= −6 1 x

(

3

)

10x7

35) f x

( ) (

= 5 8x−

) (

⋅ 3x 2−

)

36) f x

( ) (

= 7x 4−

) (

⋅ 4 5x−

)

37) f x

( )

=

(

x27

)

(

2x 3

)

38) f x

( )

5 7x

(

9 4x3

)

2

⎛ ⎞

=⋅ −

⎝ ⎠

39) f x

( )

=

(

x2+3x

) (

2x 5x 2

)

40) f x

( )

=

(

3 x 3

) (

2x53x2

)

41) f x

( )

=

(

5x23x 4+

) (

⋅ −3x31

)

42) f x

( )

7x3 11x2

(

3x2 2x 1

)

3 2

⎛ ⎞

= + ⋅ − + −

⎝ ⎠

43) f x

( )

=

(

7x210x 9+

) (

3x64x4+5x2

)

44) f x

( )

=

(

8x713x 9x4 3

) (

10x5+6x34x2

)

45) f x

( )

13

7x

= 46) f x

( )

14

5x

=

47) f x

( )

44 x

= 48) f x

( )

76

5x

− =

49) f x

( )

21 7x 5

=

− 50)

( )

3

1 f x

2 4x

= −

51) f x

( )

42 2 5x x

=

− 52)

( )

6 3

4 f x

2x 3x

− =

53) f x

( )

3x 8x 2

=

− 54)

( )

4

5x f x

x 3

− =

+

55) f x

( )

3x9 7 x

= 56) f x

( )

2x4 6

3x

+ =

57) f x

( )

4x 3 2 5x

+ =

− 58)

( )

6x 1 f x

3 4x

− +

= +

59) f x

( )

x 15 3 x x

+ =

+ 60)

( )

3

10x 9 f x

x 3x

+ =

61) f x

( )

2x3 5x2 3x 4

− =

+ 62)

( )

7 x 7 f x

8 6x

+ =

63) f x

( )

x22 2

x 2

+ =

− 64)

( )

4

4 5x 2 f x

2x 5

− =

65) f x

( )

x3 2x22 3 x 3x

+ +

=

− 66)

( )

4 3

2

2x 4x 7

f x

x 5x

− + −

=

(16)

67) f x

( )

x3 x 102 3x 2x x

+ + =

+ + 68)

( )

2

2x 3x 4x f x

x x 1

− +

=

+ +

69) f x

( )

2x

x 3

=

+ 70)

( )

3

4 x f x

5 2x

= −

71) f x

( )

7x x3 x

= 72) f x

( )

5x2 9

7 x

− =

73)

( )

(

)

(

)

2

5 x x 3

f x

2x 1

− ⋅ −

=

+ 74)

( )

(

)

(

3 2

)

2

3 2x 1 5x 3x f x

x 1

− ⋅ − +

=

+

75) f x

( )

x2 x x 1

⋅ =

+ 76)

( )

2

2 3x x f x

4x 2

⋅ =

77)

( )

(

)

(

)

7 2

2

2x 7x f x

x 5 3 2x

− =

+ ⋅ − 78)

( )

(

) (

)

2

3 2

4x 3x f x

7 x 2x x

− =

− ⋅ +

79)

( )

(

)

(

)

(

)

(

)

2

3 7x 4 x 5 f x

2x 11 x 3x

+ ⋅ −

=

− ⋅ + 80)

( )

(

) (

)

(

) (

)

3 2

2 3

3x x 2x 1

f x

8 3x 4x 2x

+ ⋅ −

=

− ⋅ −

81)

( )

2 4 x

x 2

f x

5x 9

− + =

+ 82)

( )

2

2 3 1 x 2 x f x

3 x

− − =

83) f x

( )

10 5x2 3x 2

5 x

= +

84)

( )

2 3 x 1 f x

x 2

x 3

+ =

+ +

85)

( )

2 2 2

2 x 1 x 1 f x

x 4

x 4

− + =

− +

86)

( )

2 2 3 2x 4x 7x f x

x 1 2x 6x

− −

= +

(17)

6) Calcular la derivada de las siguientes funciones:

1) f x

( )

=10ex 2) f x

( )

= −5ex 3) f x

( )

ex

7

= 4) f x

( )

ex

2

=

5) f x

( )

3ex 8

= 6) f x

( )

7ex

11

− =

7) f x

( )

=ex+2 8) f x

( )

=2ex+e 9) f x

( )

=6ln x 10) f x

( )

= −8ln x 11) f x

( )

ln x

15

= 12) f x

( )

ln x

2

= −

13) f x

( )

6 ln x 11

= 14) f x

( )

8ln x

3

− =

15) f x

( )

=e10+ln x 16) f x

( )

=ex+ln 10 17) f x

( )

=10log x 18) f x

( )

= −4log x 19) f x

( )

log x

3

= 20) f x

( )

log x

25

=

21) f x

( )

3log x 17

= 22) f x

( )

5log x

11

− =

23) f x

( )

=8log x2 24) f x

( )

= −12log x3 25) f x

( )

log x5

5

= 26) f x

( )

log x2

16

=

27) f x

( )

2log x3 7

= 28) f x

( )

3log x4

8

− =

29) f x

( )

= ⋅3 sen x 30) f x

( )

= −sen x 31) f x

( )

sen x

9

= 32) f x

( )

sen x

π

=

33) f x

( )

4 sen x 5

= 34) f x

( )

π sen x

3

⋅ =

35) f x

( )

=12 cos x 36) f x

( )

= −πcos x 37) f x

( )

cos x

7

= 38) f x

( )

cos x

4

=

39) f x

( )

7 cos x 10

= 40) f x

( )

2 cos x

5

=

41) f x

( )

=13 tg x 42) f x

( )

= −4 tg x 43) f x

( )

tg x

7

= 44) f x

( )

tg x

5

=

45) f x

( )

2 tg x 11

= 46) f x

( )

π tg x

3

⋅ =

47) f x

( )

=3 arcsen x 48) f x

( )

= −4 arcsen x 49) f x

( )

arcsen x

8

= 50) f x

( )

arcsen x

9

− =

51) f x

( )

4 arcsen x 7

= 52) f x

( )

2 arcsen x

7

− =

53) f x

( )

=6 arccos x 54) f x

( )

=19 arccos x 55) f x

( )

arccos x

6

= 56) f x

( )

arccos x

5

= −

57) f x

( )

9 arccos x 2

= 58) f x

( )

3 arccos x

7

− =

59) f x

( )

=2 arctg x 60) f x

( )

= −3 arctg x 61) f x

( )

arctg x

2

= 62) f x

( )

arctg x

π

=

63) f x

( )

5 arctg x 9

= 64) f x

( )

10 arctg x

21

(18)

7) Calcular la derivada de las siguientes funciones: 1)

( )

= ⋅ x

f x x e 2)

( )

= 3⋅ x

f x 2x e

3)

( ) (

= −

)

⋅ x

f x 5x 2 e 4)

( )

=

(

− 3

)

⋅ x

f x 3x x e

5)

( )

= 3⋅

f x x ln x 6)

( )

= − 3⋅

f x 5x ln x

7)

( )

=

(

3− 2

)

f x x 7x ln x 8)

( )

=

(

5− 3

)

f x 3x 5x ln x

9) f x

( )

= ⋅x ln x 1+ 10) f x

( )

= ⋅x ln x 1

(

+

)

11) f x

( )

=3x log x⋅ 12)

( )

= 4⋅

4 f x x log x

13) f x

( ) (

= 7x−2 log x

)

⋅ 14)

( )

= −

(

5+ 4

)

⋅ 7

f x 2x 4x log x

15) f x

( )

= − ⋅x sen x 16) f x

( )

=3x sen x5

17) f x

( ) (

= 2x 1 sen x+

)

⋅ 18) f x

( )

=

(

5x x 7

)

sen x

19) f x

( )

=4x cos x⋅ 20) f x

( )

2x cos x4 9

= ⋅

21) f x

( )

=

(

x3+5x cos x

)

22) f x

( )

=

(

3x32x2

)

cos x 23) f x

( )

= −5x tg x⋅ 24) f x

( )

1x tg x3

3

= ⋅

25) f x

( )

=

(

3x x 2

)

tg x 26) f x

( )

4x3 5x tg x 3

⎛ − ⎞

=

⎝ ⎠

27) f x

( )

= −6x arcsen x⋅ 28) f x

( )

=8x arcsen x4

29) f x

( ) (

= 1 x arcsen x−

)

⋅ 30) f x

( )

=

(

2x98x4

)

arcsen x

31) f x

( )

=11x arccos x⋅ 32) f x

( )

7 x arccos x5 15

= ⋅

33) f x

( )

=

(

x210x arccos x

)

34) f x

( )

1x3 1x2 arccos x

3 2

⎛ ⎞

=

⎝ ⎠

35) f x

( )

= −2x arc tg x⋅ 36) f x

( )

=πx arc tg x⋅ 37) f x

( )

3x2 6 arc tg x

7

⎛ ⎞

= +

⎝ ⎠ 38)

( )

4 3

f x x x arc tg x 5

⎛ ⎞

=

⎝ ⎠

39) = x⋅

f(x) 3e ln x 40) = − ⋅x

f(x) e log x

41) = x⋅ x

f(x) e e 42) = x⋅ x

f(x) 8e 10

43) f x

( )

= −5e sen xx 44) f x

( )

=9e tg xx 45)

( )

= ⋅ x

f x ln x 2 46)

( )

= ⋅ 5

3

f x ln x log x

4

47) f x

( )

=ln x arctg x⋅ 48) f x

( )

= −2ln x cos x⋅

49) f x

( )

=cos x sen x⋅ 50)

( )

= 2

f x 2sen x

51) f x

( )

=5sen x arcsen x⋅ 52) f x

( )

=1sen x arccos x⋅ 7

53) f x

( )

=tg x sen x⋅ 54) f x

( )

= −6tg x arctg x⋅

55)

( )

= +

x x

e f x

e 2 56)

( )

− = x

2 f x

e

57)f x

( )

3 ln x

= 58) f x

( )

ex

ln x

=

59) f x

( )

= x2

ln x 60)

( )

= 2

ln x f x

x

61)

( )

= + + sen x 1 f x

cos x 1 62)

( )

(

+

)

=

+ sen x 1 f x

cos x 1

63)

( )

=

(

+

)

+ sen x 1 f x

x 1 64)

( )

(

+

)

=

+ cos x 1 f x

sen x 1

65) f x

( )

tg x cos x

= 66) f x

( )

tg x

arctg x

(19)

8) Calcular la derivada de las siguientes funciones:

1) f x

( )

=e5x 2) f x

( )

=e−x 3) f x

( )

=e x 4) f x

( )

= ⋅3 e1x 5)

( )

x21

f x = ⋅5 e + 6)

( )

1 x2

f x = − ⋅7 e− 7)

( )

3x2 2x

f x =e − 8)

( )

3x2

f x =e −2x 9) f x

( )

=ln 10x 10) f x

( )

4 ln x2 3

5

= ⋅

11) f x

( )

=ln 5x

(

32x

)

12) f x

( )

=ln 2x

(

44x2

)

13) f x

( )

=ln x 14) f x

( )

3 ln 1

3x

= ⋅

15) f x

( )

=ln x2+2x 16) f x

( )

=ln x

(

2+2x

)

17) f x

( )

= ⋅e ln x 1

(

+

)

18) f x

( )

= ⋅e ln x 1+

19) f x

( )

=sen 7x 20) f x

( )

= −sen

( )

−x −x 21) f x

( )

=2sen

(

πx 8−

)

22) f x

( )

= ⋅3 sen x

(

33x

)

23) f x

( )

=cos 9x 24) f x

( )

=cos 3πx 25) f x

( )

= ⋅2 cos 5x

(

2x3

)

26) f x

( )

= ⋅π cos 3x 2

(

π

)

27) f x

( )

=3tg 2x 28) f x

( )

1tg x2

3

=

29) f x

( )

=16 tg 4x x

(

2

)

30) f x

( )

2 tg 4x x

(

2

)

π

= ⋅ −

31) f x

( )

=arctg 12x 32) f x

( )

=arctg 3πx2 33) f x

( )

=arctg x 34) f x

( )

=arctg x x 2

9) Aplicar la regla de la cadena para calcular la derivada de las siguientes funciones:

1)f x

( )

= x33 2)f x

( )

= 1 4x

3) f x

( )

= 2 5x 4)f x

( )

= 2x 3x

5) f x

( ) (

= 2x 3+

)

2 6) f x

( )

=

(

3x2+1

)

4

7) f x

( )

= ⋅3 1 x

(

)

5 8) f x

( )

= ⋅2 1 6x

(

)

5

9) f x

( )

=

(

x x 5

)

3x7 10) f x

( )

=

(

1 x 2

)

4x6 11) f x

( )

=x4 3x 1 12) f x

( )

=7x5 11x21 13) f x

( )

= x 1 x+ ⋅

(

2x

)

5 14) f x

( )

= 2x3− ⋅x 7x

(

33x

)

4 15) f x

( )

=

(

x2+1

) (

2 1 x 2

)

2 16) f x

( )

2

(

2x5 5

) (

2 3 3x3

)

3

5

= + ⋅ −

17)

( )

(

)

2

1 f x

3x 2

=

− 18)

( )

(

4

)

3

1 f x

2x 5

=

+

19)

( )

(

)

4

7 f x

5x 2

− =

+ 20)

( )

(

4

)

6

2 f x

3x 5

=

+

21)

( )

(

2

)

4

18x f x

4x 9x

=

+ 22)

( )

(

)

2

4 6

9x f x

3x 7

− =

23)

( )

(

)

2

2 2 x 2 f x

1 x

+ =

− 24)

( )

(

)

3

8 2

x 3

f x

4x 3x

− +

=

25)

( )

(

)

3

2 4

2 7x 5x f x

x 1

− =

+ 26)

( )

(

3

)

2

4 2 5 7x f x

3x 2x

− =

+

27)

( )

(

)

(

)

2 2

2 2 x 1 f x

x 1

+ =

− 28)

( )

(

)

(

)

3 2

2 2 5 2x 7x f x

4 9 3x

− =

(20)

10) Aplicar la regla de la cadena para calcular la derivada de las siguientes funciones: 1) f x

( )

=ln 2ex 2) f x

( )

=eln 2x

3)

( )

= 3⋅ 2x

f x x e 4)

( )

=2 2− ⋅ x

f x x 1 e

5)

( )

= + +

x x

e 1

f x

1 e 6)

( )

− =

+ x

x

e e

f x

e e

7) f x

( )

=ln x3 8) f x

( )

=ln x3

9) f x

( )

=e1 x− ln x2 18)

( )

3

2 x f x ln

1 x

= +

11) f x

( )

=sen x cos x⋅ 12) f x

( )

=cos x sen x

(

)

13) f x

( )

=cos sen x 14) f x

( )

=2sen senπx 15) f x

( )

=cos x2 16) f x

( )

=cos x2 17) f x

( )

=cos x2 3 18) f x

( )

=πsen x3 2 19)

( )

= 2

f x tg x 20) f x

( )

=tg 3x3 3

21) f x

( )

=tg

(

x 7x x

(

3

)

)

22)

( )

2 2 x 1 f x tg

x 1

− =

+

23) f x

( )

=arctg arctg x

(

)

24) f x

( )

=arctg tg x

(

)

25) f x

( )

= arctg x tg x3 2 26)

( )

2

2

1 arctg x

f x

1 arctg x

+

=

27) f x

( )

=ln x tg x⋅ 28) f x

( )

=ln x tg x

(

)

29) f x

( )

= ⋅π sen3π2x 30)f x

( )

= ⋅π sen2π3x

11) Aplicar la regla de la cadena para calcular la derivada de las siguientes funciones: 1) f x

( )

=e(x2+x)3 2)

( )

(

5x x2

)

2

f x = e − +x 3) f x

( )

=esen x(2+1) 4) f x

( )

=2elog 3x( 2+2x) 5) f x

( )

=ln x3 2+x 6) f x

( )

=ln x2

(

3+x

)

7) f x

( )

=ln e

(

x+e−x

)

8)

( )

x x

x x e e f x ln

e e − −

+ =

9) f x

( )

=ln tg x2 10) f x

( )

=ln cos x3 4 11)

( )

x2

f x =ln sen e 12)

( )

x2

f x = ln sen e 13) f x

( )

=ln cos x3 4 14) f x

( )

=ln sen x2 2+x2 15) f x

( )

= 2x 3x 4x 16)f x

( )

= 3x 4x 2x 17) f x

( )

=sen sen4 3πx2 18)f x

( )

=πsen sen x2 3 4 19) f x

( )

=sen cos tg x 20)

( )

1 x2

f x =ln cos e−

21) f x

( )

=tg ln sen e1 x− 22) f x

( )

=cos sen 9x7 8

(

2+10

)

11 23) f x

( )

= ⋅8 arctg ln 4x2 3

(

5+6

)

7 24)

( )

( 2 )3 2

3x 2x

2 3 4 1 x

f x sen ln arct e − −

Referencias

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