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Derivadas - UAPI

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x 1<br />

(iii) f (x) <br />

2<br />

x f (x) x2 1 (x 1) 2x<br />

x 4<br />

x2 2x 2 2x<br />

x 4<br />

x 2<br />

<br />

x 3 .<br />

Resumindo:<br />

Seja f (x) uma função de x , então temos as seguintes regras<br />

de derivação:<br />

(i) f (x) k f (x)<br />

0 , onde k é uma constante;<br />

(ii) f (x) ax b f (x)<br />

a , onde a e b são constantes;<br />

(iii) f (x) x n<br />

racionais;<br />

f (x)<br />

nx n1 , onde n<br />

<br />

§ ,<br />

(iv) f (x) g(x) h(x) f (x)<br />

g (x)<br />

h (x)<br />

;<br />

(v) f (x) u(x) v(x) f (x)<br />

u(x) v (x)<br />

v(x) u (x)<br />

,<br />

(vi) f (x) (u(x)) n<br />

(vii) f (x) u(x)<br />

v(x)<br />

v(x) 0.<br />

f (x)<br />

n(u(x)) n1<br />

u (x)<br />

;<br />

f (x)<br />

<br />

v(x) u (x)<br />

u(x) v (x)<br />

v(x) 2 ,<br />

Módulo 2<br />

215

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