2010 ALABAMA MATHEMATICS CONTEST - ALGEBRA


1. Which of the following is equal to ∜128 ?
(A) 2∜8
(B) 2∜9
(C) 4∜8
(D) 8∜2
(E) 9∜2

2. If it true that a5 < a < a4, then which of the following must also be true ?
(A) −1 < a < 0
(B) 0 < a < 1
(C) 1 < a < 2
(D) a ≥ 2
(E) a < −1

3. How many polynomials are there of the form x3 − 8x2 + cx + d such that c and d are real numbers and the three roots of the polynomial are distinct positive integers?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5

4. Let f(x) be a function such that, for every real number x, f(−x) + 2f(x) = cos x. What is the value of f( ¼ π)?
(A) √2
(B) ½
(C) ½ √3
(D) ¼ √3
(E) ⅙√2

Continuesly problem you can see in [here]

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