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、