Mathematics · Differential Equations
The differential equation of straight lines at a fixed perpendicular distance p from the origin is:
- 1(x + y')2 = p2(1 + (y')2)
- 2(x - y')2 = p2(1 + (y')2)
- 3(xy' + y)2 = p2(1 + (y')2)
- 4(xy' - y)2 = p2(1 + (y')2)✓
Correct answer
(xy' - y)2 = p2(1 + (y')2)
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