Let A be the matrix in Exercise 3. Compute the third column of A1 by using Cramers rule to solve Ax = e3.

Integrating any rational function Ratio of polynomials: by expressing the function 3 2 2 x −1 = (x−1)(x +1) = x(x−1) (+−1)(x +1) x −1 x(x +1) x(x +1) x(x +1) x−1 x−1 x 1 1 ¿ 2 + = 2 − 2 +1− x +1 x x +1 x +1 x Decompose any rational function P(x) R(x)= =G x)+ f1x)+ f2x +… f kx)...