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任意角三角函数的概念

> 已知函数y=sin 2x+2sinxcosx+3cos 2x，x∈R，（Ⅰ）求函数的最小正周期；（Ⅱ）该函数的图象可由函数y=sinx（x∈R）的图象经过怎样的变换得到？

问题：

发布时间：2024-09-13

已知函数y=sin ²x+2sinxcosx+3cos ²x，x∈R，
（Ⅰ）求函数的最小正周期；
（Ⅱ）该函数的图象可由函数y=sinx（x∈R）的图象经过怎样的变换得到？

参考答案：

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已知函数y=sin 2x+2sinxcosx+3cos 2x，x∈R， （Ⅰ）求函数的最小正周期； （Ⅱ）该函数的图象可由函数y=sinx（x∈R）的图象经过怎样的变换得到？

可能感兴趣的题目：

已知函数y=sin ²x+2sinxcosx+3cos ²x，x∈R，
（Ⅰ）求函数的最小正周期；
（Ⅱ）该函数的图象可由函数y=sinx（x∈R）的图象经过怎样的变换得到？