Stitz-Zeager_College_Algebra_e-book

N arn1 a b j 1 1 rn if r 1 1r n arn1 na if

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Unformatted text preview: 1 −2 −1 1 x 2 −1 −2 (b) x2 x2 + y 2 < 25 + (y − 3)2 ≥ 10 y 4 3 2 1 −5 −4 −3 −2 −1 −1 1 2 3 4 −2 −3 −4 −5 (c) (x − 2)2 + y 2 < 1 x2 + 4 y 2 < 4 y 1 1 −1 2 x 5 x 8.7 Systems of Non-Linear Equations and Inequalities (d) 549 y y > 10x − x2 y< x3 + 8 16 9 −4 −3 −2 −1 1 2 x −56 (e) y x + 2y 2 > 2 x2 + 4 y 2 ≤ 4 1 1 2 x −1 (f) y x2 + y 2 ≥ 25 y−x ≤ 1 7 6 5 4 3 2 1 −6 5 4 3 2 −1 − − − − −1 −2 −3 −4 −5 −6 12. x = 10, y = 10, z = 10, λ = 2 5 13. (c) x4 + 4 = (x2 − 2x + 2)(x2 + 2x + 2) 14. x4 + 6x2 − 5x + 6 = (x2 − x + 1)(x2 + x + 6) 123456 x 550 Systems of Equations and Matrices Chapter 9 Sequences and the Binomial Theorem 9.1 Sequences When we first introduced a function as a special type of relation in Section 1.4, we did not put any restrictions on the domain of the function. All we said was that the set of x-coordinates of the points in the function F is called the domain, and it turns out that any subset of the real numb...
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