The degree of the differential equation \(\left(\frac{d^{2}y}{dx^{2}}\right)^{2}+\left(\frac{dy}{dx}\right)^{2}=x\sin \left(\frac{d^{2}y}{dx^{2}}\right)\)

\(2\) \(1\) \(3\) None of these

None of these

Since the above differential equation is not a polynomial because it contains the sine term.