CUET · MATHS · PYQ PAPER 2023
The integrating factor of differential equation \(\frac{d y}{d x}+y \tan x=\sec x\) is:
- A \(e^{\cos x}\)
- B \(\sec x\)
- C \(e^{\sec x}\)
- D \(\cos x\)
Answer & Solution
Correct Answer
(B) \(\sec x\)
Step-by-step Solution
Detailed explanation
Integrating factor \( = e^{\int \tan x \, dx} \) \( = e^{\ln |\sec x|} \) \( = \sec x \)
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