设定义[a,b]上的函数f(x)在(a,b)内连续 且lim(x-a+)f(x)和lim(x-b-)f(x)存在(有限),问f(x)在[a,b]上是否有界?是否能取得最值?不好意思啊,
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![设定义[a,b]上的函数f(x)在(a,b)内连续 且lim(x-a+)f(x)和lim(x-b-)f(x)存在(有限),问f(x)在[a,b]上是否有界?是否能取得最值?不好意思啊,](/uploads/image/z/3634161-33-1.jpg?t=%E8%AE%BE%E5%AE%9A%E4%B9%89%5Ba%2Cb%5D%E4%B8%8A%E7%9A%84%E5%87%BD%E6%95%B0f%28x%29%E5%9C%A8%28a%2Cb%29%E5%86%85%E8%BF%9E%E7%BB%AD+%E4%B8%94lim%28x-a%2B%29f%28x%29%E5%92%8Clim%28x-b-%29f%28x%29%E5%AD%98%E5%9C%A8%EF%BC%88%E6%9C%89%E9%99%90%EF%BC%89%2C%E9%97%AEf%28x%29%E5%9C%A8%5Ba%2Cb%5D%E4%B8%8A%E6%98%AF%E5%90%A6%E6%9C%89%E7%95%8C%3F%E6%98%AF%E5%90%A6%E8%83%BD%E5%8F%96%E5%BE%97%E6%9C%80%E5%80%BC%3F%E4%B8%8D%E5%A5%BD%E6%84%8F%E6%80%9D%E5%95%8A%2C)
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