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The following integral is taken from exercise 7.1 of james stewart calculus 7th edition early transcendentals

$$\int_0 ^te^s\sin(t-s)~ds$$

I tried integration by parts and got the answer as follows $-\frac{1}{2}[e^t+\cos(t)+\sin(t)]$. Please verify the answer and if it is wrong please mention the correct procedure

Regards Joe Joseph

Harry Peter
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joe1983
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1 Answers1

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There is a sign error in your solution: $$-1/2\left[-e^t+cos(t)+sin(t)\right].$$

For future reference, it might be worth your while to check out a symbolic algebra package to check your answers. I would recommend starting with Wolfram Alpha.

parsiad
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