MathDB
Today's calculation of Integral 298

Source: 2008 Keio University entrance exam/Science and Technology

February 16, 2008
calculusintegrationgeometryalgebrabinomial theoremcalculus computations

Problem Statement

Let A A be the region : \left\{(x,\ y)|x\geq 0,\ y\geq 0, \left(\frac{x}{a}\right)^{\frac{1}{2}}\plus{}\left(\frac{y}{1\minus{}a}\right)^{\frac{1}{2}}\leq 1\right\} for 0<a<1. 0<a<1. (1) Find the area of A. A. (2) Find the maximum volume of the solid obtained by revolving A A around the x x axis.