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Mathematics 8 Online
OpenStudy (anonymous):

what is composite function

OpenStudy (anonymous):

"Function Composition" is applying one function to the results of another

hartnn (hartnn):

a function of function means a composite function, like \(\large f(g(x)), sin (x^2), \log (\tan x) \)

OpenStudy (anonymous):

Example: f(x) = 2x+3 and g(x) = x2 "x" is just a placeholder, and to avoid confusion let's just call it "input": f(input) = 2(input)+3 g(input) = (input)2

OpenStudy (anonymous):

Now, in the composite funtion, Domain(f(x)) is equal to range (g(X))

OpenStudy (anonymous):

or not

OpenStudy (anonymous):

you mean domain f(g(x)) ?

OpenStudy (anonymous):

no

OpenStudy (anonymous):

srry i posted wrong Is the in composite function the range of f(x) is always equal to domain of g(x) or not

hartnn (hartnn):

no, not always, iff f(x) is inverse of g(x) [that is when f(g(x))=x] only then range of one function = domain of other.

OpenStudy (anonymous):

yea i agree with Hartnn

OpenStudy (anonymous):

@hartnn thank u

hartnn (hartnn):

welcome ^_^

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