In the following partial differential equation, $\theta$ is a function of $t$ and $z$, and $D$ and $K$ are functions of $\theta$ $ D(\theta) \frac{\partial^{2} \theta}{\partial z^{2}}+\frac{\partial K(\theta)}{\partial z}-\frac{\partial \theta}{\partial t}=0$ The above equation is
(A) a second order linear equation
(B) a second degree linear equation
(C) a second order non-linear equation
(D) a second degree non-linear equation

Question ID - 1 | SaraNextGen Top Answer

In the following partial differential equation, $\theta$ is a function of $t$ and $z$, and $D$ and $K$ are functions of $\theta$ $ D(\theta) \frac{\partial^{2} \theta}{\partial z^{2}}+\frac{\partial K(\theta)}{\partial z}-\frac{\partial \theta}{\partial t}=0$ The above equation is
(A) a second order linear equation
(B) a second degree linear equation
(C) a second order non-linear equation
(D) a second degree non-linear equation