The differential equation of all straight lines passing through origin is
- A. $y = \sqrt{x}\,\frac{dy}{dx}$
- B. $\frac{dy}{dx} = y + x$
- C. $\frac{dy}{dx} = y - x$
- D. None of these
✅ Correct Answer: None of these
Explanation
All lines through origin have form $y = mx$ so $\frac{dy}{dx} = m = \frac{y}{x}$, which doesn’t match any given option.
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