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Derivadas - UAPI

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Curso de Graduação em Administração a Distância<br />

220<br />

Exercícios propostos – 2<br />

<br />

1) f (x) 5 .<br />

2) f (x) 1<br />

3 x3 1<br />

2 x2 4x 8.<br />

3)<br />

4<br />

<br />

3 f (x) x .<br />

2 1<br />

4) 3 5 f (x) x x .<br />

5) f (x) x ln x .<br />

6) f (x) cosx<br />

x 2 .<br />

7)<br />

3<br />

f (x) 10 log x tg x x .<br />

2<br />

8) f (x) x 4 2cosx 3senx .<br />

9) f (x) x 3 tg x .<br />

<br />

cadeia)<br />

Sejam y f (x) e u g(x) duas funções, tais que suas derivadas<br />

existam e exista a derivada da função y f (g(x)) , que indicaremos por<br />

dy<br />

, então<br />

dx<br />

y dy<br />

f (g(x))<br />

g (x)<br />

,<br />

dx<br />

ou ainda,<br />

y dy dy du<br />

<br />

dx du dx .<br />

Logo,<br />

y f (g(x)) y f (g(x))<br />

g (x)<br />

.

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