I am required to use U subsitiution.
u=
du=
So the problem became....
and my final answer was...
This seems correct to me, however the answer my book gives is...
Of course I will replace the u in the final answer, but I cannot figure out how the book did this problem. Can someone please tell me what I did wrong.
Thanks so much!
How did you get -5/2?
I thought that in order to replace the 5x dx with the du of -2x dx, I would have to multiply by some constant. I thought I had to get the 5x dx part equal to the du, but have a constant out in front. I multiplied by -2/5 so the 5's cancelled out and only -2 was left. I'm confused on how you get -5/2...
Then solving the rest of the problem and reducing fractions led to the -3/10.
Thanks for your help!