The ordinary differential equation $\frac{d^{2} u}{d x^{2}}-2 x^{2} u+\sin x=0$ is
(A) linear and homogeneous
(B) linear and nonhomogeneous
(C) nonlinear and homogeneous
(D) nonlinear and nonhomogeneous
The ordinary differential equation $\frac{d^{2} u}{d x^{2}}-2 x^{2} u+\sin x=0$ is
(A) linear and homogeneous
(B) linear and nonhomogeneous
(C) nonlinear and homogeneous
(D) nonlinear and nonhomogeneous