要得到y=sin(x/2+π/3)的图像,需将y=sinx/2移动至少左移——答案是2π/3,我有2种做法为什么错?1.y={1/2(x+a)+π/3}=sin(x/2+a/2+π/3).即a/2+π/3=0.故a=-2π/3.2.y=sin{1/2(x+π/6)}即a=π/6且是右移.
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![要得到y=sin(x/2+π/3)的图像,需将y=sinx/2移动至少左移——答案是2π/3,我有2种做法为什么错?1.y={1/2(x+a)+π/3}=sin(x/2+a/2+π/3).即a/2+π/3=0.故a=-2π/3.2.y=sin{1/2(x+π/6)}即a=π/6且是右移.](/uploads/image/z/981895-31-5.jpg?t=%E8%A6%81%E5%BE%97%E5%88%B0y%3Dsin%28x%2F2%2B%CF%80%2F3%29%E7%9A%84%E5%9B%BE%E5%83%8F%2C%E9%9C%80%E5%B0%86y%3Dsinx%2F2%E7%A7%BB%E5%8A%A8%E8%87%B3%E5%B0%91%E5%B7%A6%E7%A7%BB%E2%80%94%E2%80%94%E7%AD%94%E6%A1%88%E6%98%AF2%CF%80%2F3%2C%E6%88%91%E6%9C%892%E7%A7%8D%E5%81%9A%E6%B3%95%E4%B8%BA%E4%BB%80%E4%B9%88%E9%94%99%3F1.y%3D%7B1%2F2%28x%2Ba%29%2B%CF%80%2F3%7D%3Dsin%28x%2F2%2Ba%2F2%2B%CF%80%2F3%29.%E5%8D%B3a%2F2%2B%CF%80%2F3%3D0.%E6%95%85a%3D-2%CF%80%2F3.2.y%3Dsin%7B1%2F2%28x%2B%CF%80%2F6%29%7D%E5%8D%B3a%3D%CF%80%2F6%E4%B8%94%E6%98%AF%E5%8F%B3%E7%A7%BB.)
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