Recent content by MrShickadance

Thanks Halls. I think I have arrived at the correct answer now. Unfortunately, Wolfram doesn't seem to want to load the answer. It's stuck loading and I've tried refreshing the page. Was it really that difficult? haha

Homework Statement f(x) = 1/x Interval [1, ∞) about the x-axis Set-up the integral for the surface area of the solid Then use the substitution u = x2 and integrate using the formula: ∫ sqrt(u2 + a2) / u2 du = ln(u + sqrt(u2 + a2) - sqrt(u2 + a2) / u + C a is a constant Homework...