For each pair of functions

MATHEMATICS · Multi-part · A Level · Mathematics · Algebra and Functions · Algebra and Functions

Problem

For each pair of functions, find

(f\circ g)(x)

and state its domain and range: (1) a)

f(x)=\frac{1}{x}

and

g(x)=x-3

(2) b)

f(x)=-\frac{1}{x}

and

g(x)=x^2+3x+2

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