Evaluate .

Answer and explanation

Correct answer: B.

  1. Step 1: Use partial fractions: .
  2. Step 2: Integrate term by term: .
  3. Step 3: Combine logarithms: .
Answer
\frac{1}{4} \ln|\frac{x-2}{x+2}| + C.
Why not the others: '' uses instead of ; '' inverts the fraction argument; '' applies the arctan formula for .

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