Y (-x) = log2 (2+x/2-x) =-log2 (2-x/2+x) =-y (x), that is, the metafunction is odd function and odd function symmetric about the origin.

Question 2: B.

C= 1/2lge because 1

The original problem can be seen as comparing the size of a, the sum of squares of a 1/2a, where 0.

Draw an image of y=x y=x squared y= 1/2x, and observe at 0.

So a>c>b