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If $f(x)$ is a function whose domain is $[-1,9]$, and $g(x)=f(x^2)$, then the domain of $g(x)$ is an interval of what width?

 Nov 8, 2020
 #1
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The domain of g is [-1,3], so the witdh of the interval is 4.

 Nov 8, 2020
 #2
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g(x) = (f(x))^2    is defined over the same interval as f(x)   [-1,9]      interval width is 10

 Nov 8, 2020

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