Answer 2.2:4
From Förberedande kurs i matematik 2
| a) | \displaystyle \displaystyle\frac{1}{2}\arctan\left(\frac{x}{2}\right)+C | b) | \displaystyle \displaystyle\frac{1}{\sqrt3}\arctan\left(\frac{x-1}{\sqrt3}\right)+C |
| c) | \displaystyle \displaystyle\frac{1}{2}\arctan\left(\frac{x+2}{2}\right)+C | d) | \displaystyle x-\arctan x + C |
