Question

find the sencond order derivative of x²/a² +y²/a² =1​

Answer 1

Answer:

${x}^{2} + {y}^{2} = {a}^{2} \\ \\ 2x + 2y( \frac{dy}{dx} ) = 0 \\ \\ y ({\frac{d}{dx}}^{2} y) + {( \frac{dy}{dx} )}^{2} = - 1$