1. A partial differential equation requires :

(a) exactly one independent variable

(b) more than one dependent variable

(c) two or more independent variables

(d) equal number of dependent and independent variables

2. A solution to the partial differential equation is :

(a) *cos(3x – y)*

(b)* x ^{2} + y*

^{2 }(c)

*sin(3x – y)*

(d)

*e*

^{-3}^{πx}sin(πy)

3. The partial differential equation is classified as :

(a) elliptic

(b) parabolic

(c) hyperbolic

(d) none of the above

4. The partial differential equation is classified as :

(a) elliptic

(b) parabolic

(c) hyperbolic

(d) none of the above

5. The partial differential equation is classified as :

(a) elliptic

(b) parabolic

(c) hyperbolic

(d) none of the above

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