Concavity, convexity and quasi-concavity: previous year questions

Asked 1 times in 1 exam across 1 year. Newest first.

Practise Concavity, convexity and quasi-concavity, easy to hard →

1. IIT JAM 2021 Q21Let f, g: ℝ → ℝ be f(x) = xe^(-x) and g(x) = x|x|. Then, on ℝ,