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问题详情

y = a + b1x + b2x2 + bx2 是（）回归模型的数学表达式。

A、双曲线

B、指数曲线

C、对数曲线

D、多项式

时间：2021-09-02 16:17 关键词：广东开放大学市场调查与预测

答案解析

D

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