Question

lim x стремится к 0 sin2xcosx /x

Answer 1

lim(sin(2x)cos(x)/x)=lim(2sinx*cos(x)*cos(x)/x)=2     (x--->0)
[lim(sin(x)/x)=1;lim((cos(x))^2)=1 ;lim2=2   (x--->0)]