Mechanical Engineering > GATE 2025 > Partial Differential Equations
For the differential equation given below, which one of the following options is correct?
&partial;2u/&partial;x2+&partial;2u/&partial;y2=0
0≤x≤1,0≤y≤1
A
u=ex+y is a solution for all x and y
B
u=exsin y is a solution for all x and y
C
u=sin x sin y is a solution for all x and y
D
u=cos x cos y is a solution for all x and y

Correct : b

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