I'm new to this site, and this will be my last question post. My boyfriend has a few problems that he's unable to complete because of a family emergency and I have decided to try and help him. His professor hasn't responded to his emails asking for an extension on the deadline, which is tonight. I haven't done calculus in a long time, so these are pretty difficult for me to do on my own.
Find the volume of the solid generated by rotating about the x-axis the region bounded by the curves:
y=e^(10x)+e^(−10x), x=0, x=6, and the x-axis.
He had already started working on this problem and got the answer: pi(12+(sinh(120)/10)). However, the online system won't accept this answer. If you could help me figure out where he went wrong or what I can change in his answer to make it acceptable by the system, I would really appreciate that!