ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Mathematical Methods CAS => Topic started by: Karapl13 on February 25, 2017, 04:03:19 pm

Title: A quick question about Composite functions
Post by: Karapl13 on February 25, 2017, 04:03:19 pm

Hi everyone

Just checking if the domain of f(g(x) is equal to the domain of g(x), then the range of f(g(x) is equal to what?

Thanks

Title: Re: A quick question about Composite functions
Post by: noregret on February 25, 2017, 04:24:03 pm

Range of f(g(x)) is equal to f(g(x))'s end function's range.

Title: Re: A quick question about Composite functions
Post by: Shadowxo on February 25, 2017, 06:05:58 pm

The range of g(x) must be a subset of the domain of f(x) (domain of f(x) must include the range of g(x))
Input the range of g(x) into f(x) and that's your range