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6.4 EXERCÍCIOS<br />

Calcular as integrais seguintes usando o método da substituição.<br />

Introdução à integração 347<br />

(2x2 + 2x — 3) 10 (2x + 1) dx (x3 — 2) 1/7 x2 dx<br />

f 5 x dx<br />

.\1X —<br />

1 1Ix2 + 2x4 dx f<br />

et dt<br />

u et + 4 1<br />

11.<br />

15. 1<br />

. 5x "‘/4 — 3x2 dx<br />

(e2t + 2) 1/3 e2t dt<br />

ei/x + 2<br />

tg x sec2 x dx 10. senil x cos x dx<br />

sen x dx<br />

COS 5 X<br />

ex cos 2 et dx<br />

5. sen (50 — 7t) de<br />

2 sec2 0 de<br />

a + b tg 0<br />

19( dy<br />

y` — 4y + 4<br />

1<br />

x2<br />

dx<br />

2 sen x — 5 cos x dx<br />

cos x<br />

cos X2 dx<br />

3i.arc sen y<br />

dy<br />

—y2<br />

18.<br />

( 16 dx + r2<br />

).‘./ S sen 0 cos g O de

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