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The integrating factor of the differential equation is:
The integrating factor of the differential equation $(1 - x^2)\frac{dy}{dx} + xy = ax$ is:
- (a)$\sqrt{1 - x^2}$
- (b)$\frac{1}{\sqrt{1 - x^2}}$
- (c)$-\frac{x}{\sqrt{1 - x^2}}$
- (d)$-\sqrt{1 - x^2}$
Answer
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From ISC 2025 Improvement Mathematics Paper 1, question 1(vi).