Please please please can somebody show me how to solve this question please? I know that the forum says do not give full solutions but i have been on this for an hour and it's driving me f***** crazy. Thank you
Please please please can somebody show me how to solve this question please? I know that the forum says do not give full solutions but i have been on this for an hour and it's driving me f***** crazy. Thank you
Try writing each factor in the integrand in terms of u. When you find dxdu, write this in terms of u too. You should end up with a polynomial in u as the integrand once you've removed all of the xs.
Well, find what du is.. You already know u = e^x - 1, therefore e^x + 1 must be.. Expand.. Integrate in the u world, and then substitute the u's back into the x world. (Don't forget the + C!)