Hey guys. I'm just looking for some quick math help. These 2 problems are about areas between curves and the volume methods of integration.
1. Find area of region bounded by curves y = x + 5, x = y^2, y = -1, and y = 2.
For #1, I got 16.5.
2. Let R be the region bounded by the x-axis and the curves y = (2+5x^2) ^ (-1/2), x = 1, and x = 4. Find volume obtained by rotating R about y-axis.
For some reason I keep getting a negative answer here. That can't be right for a volume problem. Also, another random note: it does say rotate around y-axis, but even if you did it around x-axis, do you get the same answer?