can somebody please check my work for these few problems? its calculus ab washer disc method thingy.
Find areas and volumes as indicated. Set-up only.
Area enclosed by functions y = e^3x , y = -x+5, y-axis.

1. find area
2. volume rotated about y-axis
3. volume rotated about x-axis
4. volume rotated about x = -2
5. volume rotated about y = 12

i'll post my work down below

Question

can somebody please check my work for these few problems? its calculus ab washer disc method thingy.
Find areas and volumes as indicated. Set-up only.
Area enclosed by functions y = e^3x , y = -x+5, y-axis.

1. find area
2. volume rotated about y-axis
3. volume rotated about x-axis
4. volume rotated about x = -2
5. volume rotated about y = 12

i'll post my work down below

anonymous · Answer

attachment

irishboy123 · Answer

2 doesn't look right.  4 & 5 -- only glanced at, deal with those later...

anonymous · Answer

what isn't right about it? the limits of integration? or am i subtracting wrong?

sleepyhead314 · Answer

2 and 4 aren't quite right ^_^
looks a little like this
|dw:1426154709511:dw|