2 times the integral (from -3 to 3) of (4-x) (sqrt(9-x^2) ) dx.
Thank you very much.
how do I end this one?
9 times the integral from -1 to 1 of sqrt(1-y^2) dy - your last step! Really don't know how
Can anyone remind me how to do the trig substitution? I forgot it ! Please show me the steps . Thanks.