- #1
Tarpie
- 8
- 1
Homework Statement
[/B]
Find the surface area obtained by rotating the curve
[itex]y = x^2/4 - ln(x)/2 [/itex]
[itex]1 \leq x \leq 2[/itex]
Homework Equations
[itex]2π \int f(x)\ \sqrt{1+(f'x)^2} dx [/itex]
The Attempt at a Solution
I can't seem to isolate for x in terms of y. I raised both sides to e and separated the exponents and rearranged. Giving me [itex] e^x^2/x^2 = e^(4y) [/itex] but I'm stuck here.
Thanks