Volumes by Disk and Washer Methods

AP Calculus AB· difficulty 3/5

y = e^x

A
$\pi (e^2 - 1)/2$
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B
$2\pi$
C
$\pi (e - 1)$
D
$\pi e^2$

Explanation

V = \pi\int_0^1 e^{2x}\,dx = \pi(e^{2x}/2)\big|_0^1 = \pi(e^2 - 1)/2

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