| π | ||
a) sin(2x− | )=−1 | |
| 3 |
| π | ||
b) 2cos(3x− | )=−1 | |
| 2 |
| π | ||
a) sin ( 2 x − | ) = − 1 | |
| 3 |
| π | ||
2 x − | = 1,5 π + 2π k | |
| 3 |
| π | ||
2 x =1,5 π + | + 2π*k | |
| 3 |
| 3 | π | |||
x = | π + | + π*k | ||
| 4 | 6 |
| 11 | ||
x = | π + π*k | |
| 12 |
| π | ||
b) cos ( 3 x − | ) = −0,5 | |
| 2 |
| π | 2π | π | 4π | |||||
3 x − | = | + 2π*k lub 3 x − | = | + 2π*k | ||||
| 2 | 3 | 2 | 3 |
