- #1
jaychay
- 58
- 0
Can you check it for me that I done it right or not ?
Thank you in advance.
MHB Find the volume by using shell and disk method
Can you check it for me that I done it right or not ?
Thank you in advance.
- #2
skeeter
- 1,103
- 1
shells ...
$\displaystyle V = 2\pi \int_0^1 (x+2) \cdot x \, dx + 2\pi \int_1^4 (x+2) \cdot \sqrt{x} \, dx$
washers ...
$\displaystyle V = \pi \int_0^1 6^2 - (y+2)^2 \, dy + \pi \int_1^2 6^2 - (y^2+2)^2 \,dy$
$\displaystyle V = 2\pi \int_0^1 (x+2) \cdot x \, dx + 2\pi \int_1^4 (x+2) \cdot \sqrt{x} \, dx$
washers ...
$\displaystyle V = \pi \int_0^1 6^2 - (y+2)^2 \, dy + \pi \int_1^2 6^2 - (y^2+2)^2 \,dy$
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