2
4
12
14
∫(5x⁸ + 7x⁶)/(x² + 1 + 2x⁷)² dx∫5x⁸ + 7x⁶(1x⁷ + 1x⁵ + 2)² dx = 12 + 1x⁵ + 1x⁷ + CAs f(0) = 0, f(x) = x⁷/(2x⁷ + x² + 1)f(1) = 14