已知函数y=3sin（12x﹣π4）（1）用五点法做出函数一个周期的图象；（2）说明此函数是由y=sinx的图象经过怎么样的变化得到的？_刷题宝

题干

已知函数y=3sin（

1

2

x﹣π

4

）

（1）用五点法做出函数一个周期的图象；

（2）说明此函数是由y=sinx的图象经过怎么样的变化得到的？

上一题下一题 0.0难度选择题更新时间:2015-12-10 11:47:04

答案(点此获取答案解析）

解：（1）列表：

x

π

2

{#math

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