Nonlinear functions · 第 26 题

Nonlinear functions · 原库模块 1 · Q26 原库参考解析

The function f is defined by f(x) =(x + 3)(x + 1). The graph of f in the xy-plane is a parabola. Which of the following intervals contains the x-coordinate of the vertex of the graph of f ?

Nonlinear functions · 第 26 题

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