S = ₋₁⁰∫ (x³ - x) dx + ₀¹∫ (x - x³) dx = (x⁴/4 - x²/2) | ₋₁⁰ + (x²/2 - x⁴/4) |₀¹ = (0 - 1/4) - (0 - 1/2) + (1/2 - 0) - (1/4 - 0) = -1/4 + 1/2 + 1/2 - 1/4 = 2/4 = 1/2 = 0.5
S = ₋₁⁰∫ (x³ - x) dx + ₀¹∫ (x - x³) dx = (x⁴/4 - x²/2) | ₋₁⁰ + (x²/2 - x⁴/4) |₀¹ = (0 - 1/4) - (0 - 1/2) + (1/2 - 0) - (1/4 - 0) = -1/4 + 1/2 + 1/2 - 1/4 = 2/4 = 1/2 = 0.5