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Help me : if f(x) = x^2 - 1 and g(x) = 2x - 3 , what is the domain if (f•g)(x)
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Help me : if f(x) = x^2 - 1 and g(x) = 2x - 3 , what is the domain if (f•g)(x)

Help me : if f(x) = x^2 - 1 and g(x) = 2x - 3 , what is the domain if (f•g)(x)-example-1
User Marcel Tinner
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1 Answer

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f(x)=x^2-1

g(x)=2x-3


f\circ g(x)=f(g(x))=f(2x-3)=(2x-3)^2-1=4x^2-12x+8

which is a polynomial, so the domain is
(-\infty,\infty).
User Frankieta
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