The x coordinate values of 1.Sin2x corresponding to the quadratic root sign are π/8 and 3π/8. It can be seen simply that the image has moved from 3π/8 to 17π/24, that is, 17π/24-3π/8=π/3. So the answer is c, and pay attention to whether the moving option will change the moving distance by more than one period or move to the left.

2. When f (x) takes the maximum value, x= 1/4+2n g(x) takes the maximum value, and x= 1+2k.

You can directly select two points in a period of time and use (1/4, 1/2) (1. -1/2), the result is 5/4.