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Unformatted text preview: those that make the denominator zero. So the domains of the functions above are: f(x) x ≠ 0 g(x) x ≠ 1 and h(x) x ≠ 2 and x ≠2 or using interval notation : f(x) ( ,0) (0, )∞ +∞ U g(x) ( ,1) (1, )∞ +∞ U and h(x) ( 29 , 2) ( 2,2 (2, )∞ +∞ U U Note the graph of 2 1 ( ) f x x = . As x approaches ±∞ , the graph approaches the xaxis from above (is always positive)! Now the graph of 2 1 ( ) ( 2) f x x =would look like what ??? Similarly, Ex. 5 P. 275 asks to graph 2 1 ( ) 1 ( 2) f x x =+ look like....
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 Fall '06
 Lebre
 Algebra, Polynomials, Integers, Rational Functions, Complex number, Rational function

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