π |
3 |
π |
6 |
π |
2 |
∴cos(4x-
π |
6 |
π |
6 |
π |
3 |
∴原式就是y=2sin(4x+
π |
3 |
2π |
4 |
π |
2 |
當-
π |
2 |
π |
3 |
π |
2 |
5π |
24 |
kπ |
2 |
π |
24 |
kπ |
2 |
當
π |
2 |
π |
3 |
3π |
2 |
π |
24 |
kπ |
2 |
7π |
24 |
kπ |
2 |
當x=
π |
24 |
kπ |
2 |
當x=-
5π |
24 |
kπ |
2 |
π |
3 |
π |
6 |
π |
3 |
π |
6 |
π |
2 |
π |
6 |
π |
6 |
π |
3 |
π |
3 |
2π |
4 |
π |
2 |
π |
2 |
π |
3 |
π |
2 |
5π |
24 |
kπ |
2 |
π |
24 |
kπ |
2 |
π |
2 |
π |
3 |
3π |
2 |
π |
24 |
kπ |
2 |
7π |
24 |
kπ |
2 |
π |
24 |
kπ |
2 |
5π |
24 |
kπ |
2 |