1. Find the domain and range of the function, f(x) = root 1 - x 2
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since it is under root hence 1-x^2≥0 ⇒x^2≤1
⇒-1≤x≥1
hence domain is [-1,1]
x=√1-y^2
hence range is [0,1]
⇒-1≤x≥1
hence domain is [-1,1]
x=√1-y^2
hence range is [0,1]
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