已知函数f(x)=ax-b/x的图像在点(2,f(2))处的切线方程为7x-4y-12=0.求证:函数f(x)的图像上任...已知函数f(x)=ax-b/x的图像在点(2,f(2))处的切线方程为7x-4y-12=0.求证:函数f(x)的图像上
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![已知函数f(x)=ax-b/x的图像在点(2,f(2))处的切线方程为7x-4y-12=0.求证:函数f(x)的图像上任...已知函数f(x)=ax-b/x的图像在点(2,f(2))处的切线方程为7x-4y-12=0.求证:函数f(x)的图像上](/uploads/image/z/961625-65-5.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dax%EF%BC%8Db%2Fx%E7%9A%84%E5%9B%BE%E5%83%8F%E5%9C%A8%E7%82%B9%EF%BC%882%2Cf%282%29%EF%BC%89%E5%A4%84%E7%9A%84%E5%88%87%E7%BA%BF%E6%96%B9%E7%A8%8B%E4%B8%BA7x%EF%BC%8D4y%EF%BC%8D12%EF%BC%9D0.%E6%B1%82%E8%AF%81%EF%BC%9A%E5%87%BD%E6%95%B0f%28x%29%E7%9A%84%E5%9B%BE%E5%83%8F%E4%B8%8A%E4%BB%BB...%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dax%EF%BC%8Db%2Fx%E7%9A%84%E5%9B%BE%E5%83%8F%E5%9C%A8%E7%82%B9%EF%BC%882%2Cf%282%29%EF%BC%89%E5%A4%84%E7%9A%84%E5%88%87%E7%BA%BF%E6%96%B9%E7%A8%8B%E4%B8%BA7x%EF%BC%8D4y%EF%BC%8D12%EF%BC%9D0.%E6%B1%82%E8%AF%81%EF%BC%9A%E5%87%BD%E6%95%B0f%28x%29%E7%9A%84%E5%9B%BE%E5%83%8F%E4%B8%8A)
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