12th Class
Mathematics
Sample Paper
Maths Olympiad Model Test Paper-11
question_answer
If \[\sqrt{m}=a{{e}^{\theta \cot \alpha }}\] where a and \[\alpha \]are real numbers, then \[\frac{{{d}^{2}}m}{d{{\theta }^{2}}}-4m\,\,{{\cot }^{2}}\alpha \]is equal to _________.