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blockcolder
 2 years ago
Best ResponseYou've already chosen the best response.1\[\text{dom}(g(h(x))=\text{range}(h(x))\cap \text{dom}(g(x))\] In other words, what are the common elements in the range of h and the domain of g?

imagreencat
 2 years ago
Best ResponseYou've already chosen the best response.0Well, get the domain of h(x) first. Since x is in the radical sign and we don't want any negative numbers in there for even indices (e.g. 2), the domain of h(x) is x>=0. For g(x), it is actually the set of real numbers, since it is a polynomial. So there isn't any case for g(x). Therefore, the only condition is for x to be >=0. So the domain of h(g(x)) is x>=0.
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