WEBVTT
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So, we talked about domain, we've talked about range, we've talked about how we
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can impose domain restrictions on functions, depending on the situations in the
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real world that they're involved in, and we've talked about overall function
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behavior. However, I still want to dig deeper. Let's take a look at this
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function, g of x equals the square root of x. Now remember, that we just have a
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radical sign and no sign in front of it, it's implied that this is the positive
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square root, this is not a plus or minus thing. Let's take a look at the graph
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of this function. So, here's our graph of g of x equals the square root of x.
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Now, I could describe its behavior by saying that it's increasing from 0 to
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infinity. But let's think back to the domain. So, what do you think the domain
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of g of x is? All numbers between what and what?