23．函数f(x)=12+x+(x−1)0f(x)=\frac{1}{\sqrt{2+x}}+(x-1)^{0}f(x)=2+x1+(x−1)0的定义域是___{x∣x>−2\{x\vert x>-2{x∣x>−2[且]x≠1}x\ne 1\}x=1}___．