jelanighenry jelanighenry
  • 19-01-2018
  • Mathematics
contestada

If if f(x)=3x+1 and g(x)=x^2-1 find fog(2)

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mathmate
mathmate mathmate
  • 19-01-2018
I think this is a repeat question from yesterday.

f(x)=3x+1
g(x)=x^2-1

f o g (x) = f(g(x))=f(x^2-1)=3((x^2-1))+1=3x^2-3+1=3x^2-2
f o g(2)=3(2^2)-2=3(4)-2=10
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