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Unformatted text preview: 1 Sometimes there is more than one way to skin a cat: 8. Find Z x 1 + x dx , both by long division and by substituting u = 1 + x . 9. Find Z 2 z dz 3 √ z 2 + 1 , both by substituting u = z 2 + 1 and u = 3 p z 2 + 1. Use the trigonometric identity cos 2 α = cos 2 αsin 2 α = 2 cos 2 α1 = 12 sin 2 α to ﬁnd 10. Z sin 2 xdx 11. Z cos 2 xdx ‘ 12. Find Z sec xdx by multiplying the numerator and denominator by sec x + tan x . 2...
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 Spring '09
 LEINGANG
 Calculus, Derivative, Integrals, Integration By Substitution, dx

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