1.如果要把sin2x变为cos2x,在图像上是移动π/2还是π/4 2把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x-π/2))第二个是把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x+π/2))
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![1.如果要把sin2x变为cos2x,在图像上是移动π/2还是π/4 2把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x-π/2))第二个是把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x+π/2))](/uploads/image/z/3859444-28-4.jpg?t=1.%E5%A6%82%E6%9E%9C%E8%A6%81%E6%8A%8Asin2x%E5%8F%98%E4%B8%BAcos2x%2C%E5%9C%A8%E5%9B%BE%E5%83%8F%E4%B8%8A%E6%98%AF%E7%A7%BB%E5%8A%A8%CF%80%2F2%E8%BF%98%E6%98%AF%CF%80%2F4+2%E6%8A%8Asin2x%E5%9C%A8%E5%9B%BE%E5%83%8F%E4%B8%8A%E5%B7%A6%E7%A7%BB%CF%80%2F2%2C%E6%98%AFsin%282x%2B%CF%80%2F2%29%E8%BF%98%E6%98%AFsin%282%EF%BC%88x-%CF%80%2F2%EF%BC%89%EF%BC%89%E7%AC%AC%E4%BA%8C%E4%B8%AA%E6%98%AF%E6%8A%8Asin2x%E5%9C%A8%E5%9B%BE%E5%83%8F%E4%B8%8A%E5%B7%A6%E7%A7%BB%CF%80%2F2%EF%BC%8C%E6%98%AFsin%282x%2B%CF%80%2F2%29%E8%BF%98%E6%98%AFsin%282%EF%BC%88x%2B%CF%80%2F2%EF%BC%89%EF%BC%89)
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1.如果要把sin2x变为cos2x,在图像上是移动π/2还是π/4 2把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x-π/2))第二个是把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x+π/2))
1.如果要把sin2x变为cos2x,在图像上是移动π/2还是π/4
2
把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x-π/2))
第二个是
把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x+π/2))
1.如果要把sin2x变为cos2x,在图像上是移动π/2还是π/4 2把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x-π/2))第二个是把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x+π/2))
sin2x=cos(π/2-2x)=cos[2(x-π/4)]
所以
在图像上是移动π/4
是在x上
2.
sin(2x)
sin2x在图像上左移π/2
sin[2(x+π/2)]=sin(2x+π)=-sin2x
1.如果要把sin2x变为cos2x,在图像上是移动π/2还是π/4 2把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x-π/2))第二个是把sin2x在图像上左移π/2,是sin(2x+π/2)还是sin(2(x+π/2))
sin2x +cos2x
如果f(sinx)=cos2x,那么f(cosx)等于 A.-sin2x B.sin2x C.-cos2x D.cos2x
三角函数的数学题目!在线等!要详细过程!详细!1.当0≤x≤π/2时,求y=cos2x-4√3sinxcosx-3sin2x的最大值?2.如果|x|≤π/4求函数f(x)=cos2x+sinx的最大、最小值前面的cos2x是cosx的平方,sin2x是sinx的平方第二
化简 (1+sin2x-cos2x)/(1+sin2x+cos2x)
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要得到函数y=2sin2x的图像,只需把y=(根号3)sin2x-cos2x的图像怎么移?要详细步骤
化简sin2x+cos2x
sinx×cos2x-sin2x×cosx
sin2x-cos2x=0
sin2x·cos2x化简
cos4x=sin2x+cos2x
sin2x×cos2x/2,化简.
化简cos2x*sin2x
1-cos2x+sin2x=
为什么等于sin2x-cos2x?
sin2x-cos2x最值
sin2x/cos2x等于多少?