What is the integrating factor of x(dy/dx) + 2y = x²?
What is the integrating factor of x(dy/dx) + 2y = x²?
- A. x
- B. x²
- C. log x
- D. eˣ
Answer: B) x²
Explanation: Divide by x to get standard form: dy/dx + (2/x)y = x. Here P = 2/x. IF = e^(∫(2/x)dx) = e^(2 log x) = e^(log x²) = x².
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