defence exam SSB Head Constable (Communication) 2023 Mock Test Mathematics Differential Calculus Evaluation of derivatives
Differential coefficient of sec(tan–1x) w.r.t. x is
1
\(\rm \frac{x}{\sqrt{1+x^2}}\)
2
\(\rm \frac{x}{1+x^2}\)
3
\(\rm x \sqrt{1+x^2}\)
4
\(\rm \frac{1}{\sqrt{1+x^2}}\)