Mathematics · Differential Equations
The function u(x, y) = x / (1 + y) is a solution of which of the following first-order partial differential equations?
- 1ux + u uy = 0
- 2ux - uy = 0
- 3u ux + uy = 0✓
- 4ux + uy = 0
Correct answer
u ux + uy = 0
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