SOLUTION: 1. )what is the inverse equation to A=f(r)= (pi)r^2 , r is >or= 0 ? 2.) solve: f(g(x)) using f(x)=3x-1 and g(x)=1-x^2

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Question 709347: 1. )what is the inverse equation to A=f(r)= (pi)r^2 , r is >or= 0 ?
2.) solve: f(g(x)) using f(x)=3x-1 and g(x)=1-x^2

Answer by josgarithmetic(39629)   (Show Source): You can put this solution on YOUR website!
#1, Inverse of f(r)= (pi)r^2

g(r) new function.

Also f(g(r))=
or more simply,

That last equation can be solved for g(r),... and there be the inverse of f(r).

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