Mathematics · Differential Equations
The general solution of which of the following differential equations is tan-1x + tan-1y = c?
- 1(1 + x2)dx + (1 + y2)dy = 0
- 2(1 + x2)dy + (1 + y2)dx = 0✓
- 3dydx = 1 + x21 + y2
- 4dydx = 1 + y21 + x2
Correct answer
(1 + x2)dy + (1 + y2)dx = 0
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