Question

y等于x的平方加x-2分之根号2x-1,求x取值范围为?

Answer 1

y=√(2x-1)/(x²+x-2)

=√(2x-1)/(x+2)(x-1)

√(2x-1)>=0

x>=1/2

(x+2)(x-1)≠0

x≠-2且x≠1

综上x>=1/2且x≠1