131f09x1-page3 - δ such that if 0< | x-1 |< δ then |...

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4. The rational function f ( x )= x 2 - ax - a - 1 ( x - 2)( x +4) has two vertical asymptotes except when the constant a is equal to (a) 2 and - 4 (b) 1 and - 5 (c) 1 and 2 (d) - 4and - 5 (e) none of the above 5. Let f ( x )=10 x - 3. Then lim x ! 1 f ( x )=7 because for any number " > 0, we can choose a
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Unformatted text preview: δ such that if 0 < | x-1 | < δ , then | f ( x )-7 | < " . For " = 0 . 1, what is the biggest δ that you could choose? (a) δ = 10 (b) δ = 1 (c) δ = 0 . 1 (d) δ = 0 . 01 (e) δ = 0 . 001 3...
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