Mht CetDifferentiationMHT CET 2026 13th April Evening ShiftMCQ+2 / -02026If $\sqrt{y+x} + \sqrt{y-x} = c$ such that $\dfrac{dy}{dx} = f(x) - \sqrt{[f(x)]^2 - 1}$, then $f(x) =$ ____A$\dfrac{y}{x}$B$-\dfrac{x}{y}$C$-\dfrac{y}{x}$D$\dfrac{x}{y}$Check AnswerClear SelectionReveal AnswerShow Explanation