12-1-2010, 09:57 PM
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#6
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Join Date: Oct 2007
Posts: 2,105
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Re: [College - Calculus 1] Definite Integrals & Substitution
iirc substitute cos(x) in place of t, change dt into dx, and append the derivative of cos(x) onto the back
derivative and the integral "cancel out", as you might say, and you're left with [e^(cosx)^2]*(-sinx)
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