| 1 | ||
cosx=− | ||
| 2 |
| 2 | 2 | |||
x= | π+2kπ v x=− | π+2kπ
| ||
| 3 | 3 |
| 2 | 4 | |||
x∊( | π+2kπ, | π+2kπ)
| ||
| 3 | 3 |
| 1 | ||
cosx=− | ||
| 2 |
| 2 | 2 | |||
x= | π+2kπ v x=− | π+2kπ
| ||
| 3 | 3 |
| 2 | 4 | |||
x∊( | π+2kπ, | π+2kπ)
| ||
| 3 | 3 |
| 1 | ||
troche niedokładny wykres bo punkty powinny byc na − | ale tak schematyvznie  | |
| 2 |
| 1 | ||
cosx<− | ||
| 2 |
| 2 | 2 | 4 | 8 | |||||
x∊(π,− | π)∪( | π, | π)∪( | π,3π)
| ||||
| 3 | 3 | 3 | 3 |