CBSE 2025 · Region 5 · Set 1 · Q14 · 1 mark
The integrating factor of the differential equation $\displaystyle \left(\frac{\mathrm{e}^{-2 \sqrt{\mathrm{x}}}}{\sqrt{\mathrm{x}}}-\frac{y}{\sqrt{\mathrm{x}}}\right) \frac{d \mathrm{x}}{d y}=1$ is :
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \mathrm{e}^{2 \sqrt{\mathrm{x}}}$
Differential EquationsMethods of Solving First Order, First Degree Differential EquationsRemembermcqhard
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CBSE Class 12 Mathematics past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.