| π | ||
a) sin( | * cos(x)) ? | |
| 6 |
| π | ||
−1≤cosx≤1 /* | ||
| 6 |
| π | π | π | ||||
− | ≤ | cosx≤ | ||||
| 6 | 6 | 6 |
| π | π | π | ||||
sin(− | )≤sin( | cosx)≤sin | ||||
| 6 | 6 | 6 |
| 1 | π | 1 | ||||
− | ≤sin( | cosx)≤ | ||||
| 2 | 6 | 2 |
| π | ||
−1 ≤sinx≤ 1 /* | ||
| 4 |
| π | π | π | ||||
− | ≤ | sinx ≤ | ||||
| 4 | 4 | 4 |
| π | π | π | ||||
tg(− | ) ≤ tg( | sinx) ≤ tg( | ) | |||
| 4 | 4 | 4 |
| π | π | π | ||||
− tg( | ) ≤ tg ( | sinx) ≤ tg( | ) | |||
| 4 | 4 | 4 |
| π | ||
− 1 ≤ tg ( | sinx) ≤ 1 | |
| 4 |