The degree of the differential equation \(\left(\frac{d^{2}y}{dx^{2}}\right)^{2}+\left(\frac{dy}{dx}\right)^{2}=x\sin \left(\frac{d^{2}y}{dx^{2}}\right)\)
Answer & explanation
Correct answer: option 4
Since the above differential equation is not a polynomial because it contains the sine term.