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

Printable View

- Jan 18th 2011, 09:28 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, 09:46 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, 09:52 AMalexgeek