engineering recuitment NFC Chemical Plant Operator Mock Test Mathematics Differential Calculus Evaluation of derivatives
यदि \(\rm y = \dfrac{x+1}{x-1}\) है, तो \(\rm \dfrac{dy}{dx}\) किसके बराबर है?
1
\(\rm \dfrac{-2}{x-1}\)
2
\(\rm \dfrac{-2}{(x-1)^2}\)
3
\(\rm \dfrac{2}{(x-1)^2}\)
4
\(\rm \dfrac{2}{(x-1)}\)