Posted: 2/3/2007 4:49:28 PM EDT
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what method do I need to use to differentiate x'(t) = te^(-t^2) thats T E to the neg T squared and if it is by parts what do I need to be using a u and dv. Thanks in advance to anyone that helps |
+1, sounds like he's asking for integration help, not differentiation help personally i'd try a u-substitution, with u=-t^2 and du = -2t but then again i suck at integration |
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I believe this is the answer, and forgive me it's been 6 years since Calc 2 in college. With that said.... you use U substitution... for F(t) = Se^(-t^2)) (S is the integral sign) let u = -t^2 then du = -2tdt and tdt = (-1/2)du <- important plug back in F(t) = (-1/2)Se^udu = (-1/2)e^u substitute back in (-1/2)e^(-t^2)) |