Question

The partial differential equaiton $\frac{{\partial }^2\varphi }{\partial x^2}+\frac{{\partial }^2\varphi }{\partial y^2}+\frac{\partial \varphi }{\partial x}+\frac{\partial \varphi }{\partial y}=0$ has

• A. degree $1$ and order $2$
• B. degree $1$ and order $2$
• C. degree $1$ and order $1$
• D. degree $2$ and order $2$

Answer 1

The correct option is A degree $1$ and order $2$

Order $=2$ (order is the highest derivative)
Degree $=1$ (exponent of highest derivative)