题译为:将函数f(x)=2sin(wx-π/3)(w>0)的图像向左平移π/3w 个单位得到函数y=g(x)的图像,若y=g(x)在[-π/6,π/4]上为增函数,则w的最大值是. 结论:w的最大值是2 f(x)的图像向左平移π/3w 个单位得:g(x)=2sin(wx) (w>0)w满足条件的充要条件是: [-π/6,π/4]是 [-π/2w,π/2w]的子集.由此得 -π/2w<=-π/6 且 π/4<=π/2w (w>0) 解得 0
1年前
2
题译为:将函数f(x)=2sin(wx-π/3)(w>0)的图像向左平移π/3w 个单位得到函数y=g(x)的图像,若y=g(x)在[-π/6,π/4]上为增函数,则w的最大值是. 结论:w的最大值是2 f(x)的图像向左平移π/3w 个单位得:g(x)=2sin(wx) (w>0)w满足条件的充要条件是: [-π/6,π/4]是 [-π/2w,π/2w]的子集.由此得 -π/2w<=-π/6 且 π/4<=π/2w (w>0) 解得 0
1年前
2