Answer 5.1:2
From Förberedande kurs i matematik 1
| a) | \cos{v} = \cos{\displaystyle \frac{3\pi}{2}} | b) | \tan\displaystyle\frac{u}{2}=\frac{\sin u}{1+\cos u} |
| c) | \left\{\eqalign{
x&=n\pi\cr x&=\displaystyle \frac{\pi}{4}+\displaystyle \frac{n\pi}{2} }\right. | d) | <math> \bigl(\sqrt[\scriptstyle4]3\,\bigr)^3\ \sqrt{2 + \sqrt{4}}</math> |
