Question

**Calc2 Help Needed** Find the area of the surface generated by revolving the curve x = (e^y + e^-y) / 2 from x = 0 to x = ln(2).

Answer 1

This is around the y-axis..

Answer 2

Yeah it is surface area not volume, though.

Answer 3

oh dang...

Answer 4

hmm.. Still confused.. do i need u-substitution?

Answer 5

Hi ...

Ummm its nice equ :D

i have somethings to say .. i dont know whither its true or not .. but i like to share it

x = cosh y

while x cannot be zero ... but we can say when y = 0 , x = 1

you need to find area .. so we need to enclose the draw



so what is range ? cause x cannot be zero ????

in other word what is the area that we want to cal. ^_^!