What is the integral of #xcos(x)#?
2 Answers
You use idea of the integrating by parts:
Let:
Then:
The integral is:
You can get this result Integrating by Parts .
In general if you have the product of two functions
The integral of the product of the two functions is equal to the product of the integral (
In your case you get (you can choose which one is
And finally:
You can now check your answer by deriving this result.