一道函数题:已知函数f(x)=k+√x-2 ,若在其定义域内存在区间[a,b],使得f(x)在区间[a,b]上的值域也是[a,b]已知函数f(x)=k+√x-2 ,若在其定义域内存在区间[a,b],使得f(x)在区间[a,b]上的值域也是[a,b],求实
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![一道函数题:已知函数f(x)=k+√x-2 ,若在其定义域内存在区间[a,b],使得f(x)在区间[a,b]上的值域也是[a,b]已知函数f(x)=k+√x-2 ,若在其定义域内存在区间[a,b],使得f(x)在区间[a,b]上的值域也是[a,b],求实](/uploads/image/z/6592989-21-9.jpg?t=%E4%B8%80%E9%81%93%E5%87%BD%E6%95%B0%E9%A2%98%3A%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dk%2B%E2%88%9Ax-2+%2C%E8%8B%A5%E5%9C%A8%E5%85%B6%E5%AE%9A%E4%B9%89%E5%9F%9F%E5%86%85%E5%AD%98%E5%9C%A8%E5%8C%BA%E9%97%B4%5Ba%2Cb%5D%2C%E4%BD%BF%E5%BE%97f%28x%29%E5%9C%A8%E5%8C%BA%E9%97%B4%5Ba%2Cb%5D%E4%B8%8A%E7%9A%84%E5%80%BC%E5%9F%9F%E4%B9%9F%E6%98%AF%5Ba%2Cb%5D%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dk%2B%E2%88%9Ax-2+%2C%E8%8B%A5%E5%9C%A8%E5%85%B6%E5%AE%9A%E4%B9%89%E5%9F%9F%E5%86%85%E5%AD%98%E5%9C%A8%E5%8C%BA%E9%97%B4%5Ba%2Cb%5D%2C%E4%BD%BF%E5%BE%97f%28x%29%E5%9C%A8%E5%8C%BA%E9%97%B4%5Ba%2Cb%5D%E4%B8%8A%E7%9A%84%E5%80%BC%E5%9F%9F%E4%B9%9F%E6%98%AF%5Ba%2Cb%5D%2C%E6%B1%82%E5%AE%9E)
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