y=（根号下1-x^2）/|x+1|+|x-2|判其奇偶性：y(x)的定义域为：(-1,1)；取 x = ± 0.5 ∈ (-1,1),1,y(-0.5)= √3/2 / 0.5 + 2.5 = 2.5 + √3y(0.5)= √3/2 / 1.5 + 1.5 = 1.5 + √3/3由：y(-0.5) ≠ y(0.5),y(x) 不是...