14、- 1
15、- 1/9
16, (required 5)4
17、
1、f(x)=2sin(2x+π/6)+ 1
Minimum positive period = π
2.x shifts π/6 to the left to get sin(x+π/6).
The X period is shortened by 1/2 to obtain sin(2x+π/6).
The extension of y is twice that of the above formula, and 2sin(2x+π/6) is obtained.
Y moves up 1 2sin(2x+π/6)+ 1.
Note: The language may be inappropriate, please modify it.
18、