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Find the domain of the composite function ݂ f*g?
f(x)=x^2+5; g(x)=sqrt x-8
sqrt=square root
please show your steps on how to do this. Thank you.
1 Answer
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- Anonymous9 years ago
f*g=f[g(x)]= f(sqrt(x-8))=(sqrt(x-8))^2-8=x-8-8=x-16
so domain should be -inf to +inf
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