Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 Mathematics Trigonometry Inverse Trigonometric Functions
Derivative of \(\rm \cos^{-1}\left(\frac{x-x^{-1}}{x+x^{-1}}\right)\) is
1
\(\frac{x}{1+x^2}\)
2
\(\frac{2}{1+x^2}\)
3
\(\frac{-2}{1+x^2}\)
4
\(\frac{-x}{1+x^2}\)