Question

Integrate the following with respect to x:

(i) (2x + 1)/√(9 + 4x - x²)

(ii) (x + 2)/√(x² - 1)

(iii) (2x + 3)/√(x² + 4x + 1) 

Answer 1

(i) (2x + 1)/√(9 + 4x - x²)

Let 

(ii) (x + 2)/√(x² - 1)

Let

(iii) (2x + 3)/√(x² + 4x + 1) 

Let