F(x)=√2-x. is this right?
2-x≥0
+x≥+x
2≥x
flip it x≤2
answer (-∞,2]
My problem doesn't have parenthesis in the radical.
If your assignment is to find the domain of F given the codomain R,
and if √2-x means √(2-x), then your answer is correct.
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If your assignment is to find the domain of F given the codomain R,
and if √2-x means √(2-x), then your answer is correct.