Question:medium
The integrating factor of the differential equation \(\frac{dy}{dx} + \frac{2y}{20 - x} = 10\) is
The integrating factor of the differential equation \(\frac{dy}{dx} + \frac{2y}{20 - x} = 10\) is
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Always be careful with the negative sign when integrating terms like \(1/(a-x)\). A missing negative sign in the exponent is the most frequent error in I.F. calculations.
Updated On: Jun 24, 2026
- \(\frac{1}{(20 - x)^2}\)
- \(\frac{1}{20 - x}\)
- \(20 - x\)
- \(\log_e |20 - x|\)
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The Correct Option is A
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