Evaluate ∫ x tan⁻¹x dx.
University of Ilorin MTH102 2026-exam past question
- ((x² + 1)/2) tan⁻¹x − x/2 + C
- (x²/2) tan⁻¹x − x/2 + C
- ((x² − 1)/2) tan⁻¹x + x/2 + C
- (x²/2) tan⁻¹x − ½ ln(1 + x²) + C
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