考试GRE上册《GRE数学代数》练习题

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本单元考点（4 个）

一元一次方程求解不等式解集判断代数式化简与求值函数图像与性质

题目预览（5/9 题）

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1. The function f(x) satisfies f(−x) = −f(x) for all x in its domain. The graph of f is symmetric with respect to the ______, and such a function is called an ______ function.

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2. The graph of a quadratic function opens upward and its lowest point lies on the y-axis. In this case, the function is said to be ______ about the y-axis, and its range is bounded below by the y-coordinate of its ______.

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3. In the algebraic expression 5x² + 3x − 7, the word 'coefficient' refers to ______.

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4. The graph of y = −f(x) is obtained from the graph of y = f(x) by a ______ across the x-axis, so every point (x, y) on the original graph corresponds to (x, −y) on the new graph.

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5. Inequality Solving Drill: Which of the following represents the complete solution set of the inequality |2x − 5| < 3? A. {x | 1 < x < 4} B. {x | −4 < x < 1} C. {x | 1 ≤ x ≤ 4} D. {x | x < 4}

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