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f(x) - Campus Rio Pomba

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354 Cálculo A — Funções, Limite, Derivação, Integração<br />

Então,<br />

J<br />

sena x dx = sen2 x (- cos x) - - cos x • 2 sen x cos x dx<br />

6.6 EXERCÍCIOS<br />

- sen2 x cos x + 2 cos2 x sen x dx<br />

COS 3 X<br />

= - sen 2 X COS X — 2<br />

3 + c .<br />

Resolver as seguintes integrais usando a técnica de integração por partes.<br />

1. $ x sen 5x dx G 5 ln (1 — x) dx<br />

3. f t e4t dt 4. (x f + 1 ) cos 2 x dx<br />

5. f x ln 3 x dx 6. i cos3 x dx<br />

7. f ex cos ";, dx 8. 5 \rx ln x dx<br />

9. cosec3 x dx 10. $ x2 cos a x dx<br />

11. $ x cosec2 x dx 12. j. arc cotg 2x dx

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