find out for what values of p > 0 this integral is convergent
##\displaystyle{\int_0^\infty x^{p-1}e^{-x}\,dx}\;##
so i broke them up to 2 integrals one from 0 to 1 and the other from 1 to ∞ and use the limit convergence test. but i found out that there are no vaules of p that makes both of...