#58 01.04 Combinations of Functions

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May 12th, 2015

the domains of  f(x)=1/x  is  x =/=0 so :  Df=IR-{ 0 }

the domains of g(x)=x + 3   so is a polynome so : Dg=IR 

the domains of f°g(x) = f(g(x)) = 1/(x+3) so is x + 3 =/=0  so x =/= -3  so :  Df°g = IR - {-3}

Good luck 

And please each time you have any other homework call me first i will give you the best answer 

May 12th, 2015

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