I don't know if that stands for the result that $g(x)$ takes the value $x$ to the value $y$ But what I knew is $g(\mathbb R)= [-1,1]$ so its must be $\mathbb R → [-1,1]$ right ?
2026-05-13 19:43:31.1778701411
I wonder what this arrow stands for: $\mathbb R → \mathbb R$
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