answer is zero according to the answer key
#ts so tuff
split notch
jagged ventureBOT
forest axle
!status
jagged ventureBOT
What step are you on?
1. I don't know where to begin.
2. I have begun but got stuck midway.
3. I got an answer but I was told that it's wrong.
4. I got an answer and would like my work checked.
5. I have a question about someone else's work/solution.
6. I have completed the problem and don't need help anymore. Thank you.
7. None of the above
tired mason
answer is zero according to the answer key
Just add 1 to this expression inside the integral and check the derivative of x cos(x). Then integration by parts solves it all.
Well, that is not that straightforward, but finding the derivative of (x cos(x))/(1+x sin(x)) solves it
split notch
@jagged venture
split notch
Well, that is not that straightforward, but finding the derivative of (x cos(x))...
how did you exactly come up with this expression?
tired mason
how did you exactly come up with this expression?
First, I remember this or similar integral was already asked here recently. So, I knew what it is about. Then this square in the denominator means that it should be something of the type A/(1+x*sin(x)). Then just try some obvious functions for A, such as sin, cos, x sin, x cos.