A question I just tried has me thinking about the range of a composite function:

Find

The range of g is though, so is the only answer or is also an answer?

Thanks

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- Jan 18th 2011, 10:28 AMalexgeekSome clarification on ranges when combining functions
A question I just tried has me thinking about the range of a composite function:

Find

The range of g is though, so is the only answer or is also an answer?

Thanks - Jan 18th 2011, 10:46 AMDrSteve
Since you restricted the domain of f, it is not permitted to substitute -2 in for x in the function f. So x=-2 cannot be a solution to the given equation.

- Jan 18th 2011, 10:52 AMalexgeek