Integrate the rational functions.
Let
⇒ 2 = A(1 – x2) + (Bx + C)(1 – x)
⇒ 2 = A + Ax2 + Bx – Bx2 + C – Cx
On comparing the coefficients of x2, x and constant term, we get,
A – B = 0
B – C = 0
A + C = 0
On solving these equations, we get,
A = 1, B =1 and C = 1
Thus,