Prove-that-1-0-e-x-lnxdx-is-a-negative-number-

Question Number 2435 by Yozzi last updated on 20/Nov/15

P r o v e t h a t

Γ^{'} (1) = \int_{0}^{\infty} e^{- x} l n x d x

i s a n e g a t i v e n u m b e r .

Commented by prakash jain last updated on 20/Nov/15

Γ^{'} (1) = - γ

will add proof .