Let f 2 times differentiable function in open interval (-r,r), when r>0. There are two numbers M,N>0 so that |f ''(x)|<=N , |f(x)|<=M for all x in (-r,r). Prove that |f ' (0) | <= 2sqrt(M*N) + 2*M/r
Follow Math Help Forum on Facebook and Google+
View Tag Cloud