一些高中函数题目 速度呀1、已知一次函数f(x)经过点(2,1) (1)对于函数上任意一点P(x,y),Q(x+1,y-3)也在f(x)的图像上,求函数f(x)的解析式(2)若对x∈ 【0,4】,f(x)>0恒成立,求f(x)与y轴交点纵
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![一些高中函数题目 速度呀1、已知一次函数f(x)经过点(2,1) (1)对于函数上任意一点P(x,y),Q(x+1,y-3)也在f(x)的图像上,求函数f(x)的解析式(2)若对x∈ 【0,4】,f(x)>0恒成立,求f(x)与y轴交点纵](/uploads/image/z/5466132-36-2.jpg?t=%E4%B8%80%E4%BA%9B%E9%AB%98%E4%B8%AD%E5%87%BD%E6%95%B0%E9%A2%98%E7%9B%AE+%E9%80%9F%E5%BA%A6%E5%91%801%E3%80%81%E5%B7%B2%E7%9F%A5%E4%B8%80%E6%AC%A1%E5%87%BD%E6%95%B0f%28x%29%E7%BB%8F%E8%BF%87%E7%82%B9%282%2C1%29+%EF%BC%881%EF%BC%89%E5%AF%B9%E4%BA%8E%E5%87%BD%E6%95%B0%E4%B8%8A%E4%BB%BB%E6%84%8F%E4%B8%80%E7%82%B9P%28x%2Cy%29%2CQ%28x%2B1%2Cy-3%29%E4%B9%9F%E5%9C%A8f%28x%29%E7%9A%84%E5%9B%BE%E5%83%8F%E4%B8%8A%2C%E6%B1%82%E5%87%BD%E6%95%B0f%28x%29%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%882%EF%BC%89%E8%8B%A5%E5%AF%B9x%E2%88%88+%E3%80%900%2C4%E3%80%91%2Cf%EF%BC%88x%EF%BC%89%3E0%E6%81%92%E6%88%90%E7%AB%8B%2C%E6%B1%82f%EF%BC%88x%EF%BC%89%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E7%82%B9%E7%BA%B5)
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