将y=sinX变换到y=2sin(3X+π/4)-2
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将y=sinX变换到y=2sin(3X+π/4)-2
将y=sinX变换到y=2sin(3X+π/4)-2
将y=sinX变换到y=2sin(3X+π/4)-2
横坐标不变、将纵坐标变为原来的2倍.然后纵坐标不变、横坐标变为原来的1/3.然后图像向左平移π/4个单位.再向下平移2个单位.