If Rolle's theorem holds for the function $f(x)=2 x^{3}+b x^{2}$ $+c x, x \in[-1,1]$, at the point $

Question

If Rolle's theorem holds for the function $f(x)=2 x^{3}+b x^{2}$ $+c x, x \in[-1,1]$, at the point $x=1 / 2$, then $2 b+c$ equals\

Professor PC Thomas Classes · Answer

(b)\