Question 644704
find the domain of the composite function f of g. f(x)=x^2+9;g(x)=sqrtx-7 
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f[g(x)] 
= f[sqrt(x)-7] 
=(sqrt(x)-7)^2+9 
= x-14sqrt(x)+49 + 9 
= x -sqrt(x)+58

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Domain: x >= 0
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cheers,
Stan H.