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OpenStudy (anonymous):
Find f(g(x)) when f(x)=5x^3 -2x and g(x)=3x^3 and state the domain
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OpenStudy (the_fizicx99):
If i remember correctly you plug in that for x, f(g(x)) = 5(3x^3)^3
OpenStudy (anonymous):
^ That is correct. Finding the domain of (fxg)(x) is basically finding the domain of both f(x) and g(x) and seeing which one includes values from both equations.
OpenStudy (anonymous):
thats what i came up with but how do you simplify that?
OpenStudy (the_fizicx99):
They just asked to write the composition, which is that
OpenStudy (anonymous):
it says to perform the indicated operation, does that mean i just leave it like that?
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