Order and degree of differential equation $\frac{d^2 y}{d x^2}=\left[y+\left(\frac{d y}{d x}\right)^2\right]^{1 / 4}$ are :
Answer & explanation
Correct answer: option 4
On simplification the equation becomes $\left(\frac{d^2 y}{d x^2}\right)^4=y+\left(\frac{d y}{d x}\right)^2$
Hence (4) is the correct answer.