12th Class
Mathematics
Sample Paper
Mathematics Olympiad - Sample Paper-5
question_answer
If \[\mathbf{h}\left( \mathbf{x} \right)=\mathbf{f}\left( \mathbf{x} \right)+\mathbf{f}\left( -\mathbf{x} \right)\], then h(x) has get an extreme value at a point where \[\mathbf{f}'\left( \mathbf{x} \right)\]is: