The differential equation \(121 \frac{d^2 y}{d x^2}-2 \tan (x+y) \frac{d y}{d x}+16 y=2 e^{x^2}\) is
1
second order linear homogeneous equation
2
second order non-linear homogeneous equation
3
second order linear non-homogeneous equation
4
second order non-linear non-homogeneous equation