MathDB
IMC 2010 - Problem 1

Source:

July 26, 2010
integrationreal analysisreal analysis unsolved

Problem Statement

Let 0<a<b0 < a < b. Prove that ab(x2+1)ex2dxea2eb2\int_a^b (x^2+1)e^{-x^2} dx \geq e^{-a^2} - e^{-b^2}.