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    Let f(x)=x^2+2 and g(x)=(sqrt) 1-x^2. Are f*g, g*f defined?

    Find the domain and range of f*g. Let f(x)=x^2+2 and g(x)= (sqroot) 1-x^2 Are the functions of f*g and g*f defined? Explain I have some of this done but want to know if i'm on the right track. Help would be very much appreciated
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