considering f(x) is a twice differentiable function
if f ' (a) =0 and f '' (a) <0 it is said to be maxima similary if f ''(a)>0 it said to be minima but sometimes this rule failed to work can u tell me why
considering f(x) is a twice differentiable function
if f ' (a) =0 and f '' (a) <0 it is said to be maxima similary if f ''(a)>0 it said to be minima but sometimes this rule failed to work can u tell me why