What is the integrating factor of the differential equation ?

Answer and explanation

Correct answer: C.

  1. Step 1: Invert the derivative to treat as the dependent variable: .
  2. Step 2: Express in standard linear form : , so .
  3. Step 3: Compute integrating factor: .
Answer
.
Why not the others: forgets the minus sign in ; squares the integrating factor; assumes .

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