Posted by **Jamie** on Monday, November 8, 2010 at 12:55pm.

f(x)= 4-x^2 and g(x)= sqrt (x)

find the implied domain of fg(x)

fg(x)= f(sqrt(x))

fg(x)= 4-(sqrt(x))^2

fg(x)=4-(sqrt x)(sqrt x)

fg(x)=4-x

domain= (x:x=all real numbers)

Am I correct?

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