已知函数y=3sin[(1/2)x-(π/4)](1)用五点法作函数图象(2)求函数周期(3)求函数的单调递增区间(4)求此函数图像的对称轴,对称中心
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![已知函数y=3sin[(1/2)x-(π/4)](1)用五点法作函数图象(2)求函数周期(3)求函数的单调递增区间(4)求此函数图像的对称轴,对称中心](/uploads/image/z/7015777-25-7.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0y%3D3sin%5B%281%2F2%29x-%EF%BC%88%CF%80%2F4%29%5D%281%29%E7%94%A8%E4%BA%94%E7%82%B9%E6%B3%95%E4%BD%9C%E5%87%BD%E6%95%B0%E5%9B%BE%E8%B1%A1%EF%BC%882%EF%BC%89%E6%B1%82%E5%87%BD%E6%95%B0%E5%91%A8%E6%9C%9F%EF%BC%883%EF%BC%89%E6%B1%82%E5%87%BD%E6%95%B0%E7%9A%84%E5%8D%95%E8%B0%83%E9%80%92%E5%A2%9E%E5%8C%BA%E9%97%B4%EF%BC%884%EF%BC%89%E6%B1%82%E6%AD%A4%E5%87%BD%E6%95%B0%E5%9B%BE%E5%83%8F%E7%9A%84%E5%AF%B9%E7%A7%B0%E8%BD%B4%2C%E5%AF%B9%E7%A7%B0%E4%B8%AD%E5%BF%83)
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