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January 30, 2015

Posted by **Bryant** on Wednesday, March 7, 2012 at 1:35am.

a = x

b = y

I tried thinking about it like a chain rule but even then i'm a little unsure.

I know dz/dt = e^sin(t). Can you please point me in the right direction if i'm supposed to use the chain rule.

- calculus -
**MathMate**, Wednesday, March 7, 2012 at 7:22amDon't know if you really meant

∫sin(t)e^t dt

If that's the case, try differentiate using the chain rule,

sin(t)e^t

and

cos(t)e^t

You should be able to figure out the integral from the results.

The original integral you posted does not seem to have an analytic solution. A series solution is (almost always) available but does not fit your bill.

- calculus -
**Anonymous**, Wednesday, March 7, 2012 at 11:41amuh no i meant what i typed which is e^(sin(t))

- calculus -
**Steve**, Wednesday, March 7, 2012 at 12:18pmIn that case, I fear there is no solution using elementary functions.

who posed such a problem? It's solvable numerically, using a Taylor series, but not symbolically.

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