CBSE 2026 · Region 1 · Set 1 · Q11 · 1 mark
The integrating factor of differential equation $\displaystyle \mathrm{R} \frac{\mathrm{d} x}{\mathrm{dy}}+\mathrm{P} x=\mathrm{Q}$ where $\displaystyle \mathrm{P}, \mathrm{Q}, \mathrm{R}$ are functions of $\displaystyle y$ is
Official answer
From CBSE’s own marking scheme for this paper.
(C)
$\displaystyle \mathrm{e}^{\int \frac{\mathrm{P}}{\mathrm{R}} \mathrm{d} y}$
Differential EquationsMethods of Solving First Order, First Degree Differential EquationsRemembermcqmedium
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CBSE Class 12 Mathematics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.