$\displaystyle \pi \int_{0}^{4} (e^{\frac{1}{2}y}-1)^2 dy$ where do i start?
Last edited by BabyMilo; Sep 27th 2010 at 01:19 PM.
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Calculate this $\displaystyle (e^{\frac{1}{2}y}-1)^2=... $ then integrate.
$\displaystyle \pi \int_{0}^{4} (e^{\frac{1}{2}y}-1)^2 dy = \pi \int_{0}^{4} (e^{\frac{1}{2}y}-1)(e^{\frac{1}{2}y}-1) dy$ Expand then integrate term by term.
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