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Write a value of inte^x\ (sinx+cosx)dx...

Write a value of `inte^x\ (sinx+cosx)dx`

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` int e^(x) (sin x+ cos x) dx`
` = int e^(x) sin x dx + int e^(x) cos x dx`
` = sin x int e^(x) dx- itn {(d)/(dx) sin x int e^(x) dx} dx`
` + int e^(x) cos x dx+C`
`=sin x. e^(x) - int cos x. e^(x) dx+ int e^(x) cos x dx +C`
` =e^(x) sin x+C`
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