defence exam Army Havildar SAC Mock Test Series 2025 Mathematics Differential Calculus Evaluation of derivatives
यदि y = elog (log x) है, तो \(\rm \frac{dy}{dx}\) ज्ञात कीजिए।
1
\(\rm \frac 1 x\)
2
\(\rm \frac {1}{\log x}\)
3
elog (log x)
4
इनमें से कोई नहीं