MathDB
Today's calculation of Integral 287

Source: 2008 Kwansei Gakuin University entrance exam

February 3, 2008
calculusintegrationgeometryfunctioncalculus computations

Problem Statement

For constant numbers a, b a,\ b, let f(x)\equal{}e^{\minus{}x}(ax\plus{}b). Suppose that the curve y\equal{}f(x) passes through two points (t,\ 1),\ (t\plus{}1,\ 1). Find the area of the part bounded by the curve y\equal{}f(x) and the line y\equal{}1.