List of top Mathematics Questions on Second Order Derivative asked in AP EAPCET

If \[ \sqrt{x}+\sqrt{y}=\sqrt{a}, \] then \[ \left(\frac{d^2y}{dx^2}\right)_{x=a} = \]

If \[ x=f(\theta) \] and \[ y=g(\theta), \] then \[ \frac{d^2y}{dx^2}= \]

If \[ y=\frac{\log x}{x}, \] then \[ \frac{d^2y}{dx^2} at x=1 = \]