Integrate the functions.
Let 5x - 2 =
⇒ 5x - 2 = A(2 + 6x) + B
Now, equating the coefficients of x and constant term on both sides, we get,
6A = 5
⇒ A =
2A + B = -2
⇒ B =
⇒ 5x - 2 = (2 + 6x) +
⇒
⇒
Now,
Let 1+2x+3x2 = t
⇒ (2 + 6x)dx = dt
⇒
= log|1+2x+3x2| …(1)
And
1+2x+3x2 =
⇒
⇒
⇒
⇒
…(2)
Thus, from (1) and (2), we get,
⇒
⇒