(2014•嘉定区一模)已知函数f(x)=x+m/x+2(m为实常数). (1)若函数y=f(x)图象上动点P到定点Q(0,2)的距离的最小值为根号2,求实数m的;(2)若函数y=f(x)在区间[2,+∞)上是增函数
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![(2014•嘉定区一模)已知函数f(x)=x+m/x+2(m为实常数). (1)若函数y=f(x)图象上动点P到定点Q(0,2)的距离的最小值为根号2,求实数m的;(2)若函数y=f(x)在区间[2,+∞)上是增函数](/uploads/image/z/13326696-0-6.jpg?t=%EF%BC%882014%26%238226%3B%E5%98%89%E5%AE%9A%E5%8C%BA%E4%B8%80%E6%A8%A1%EF%BC%89%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%EF%BC%9Dx%2Bm%2Fx%2B2%EF%BC%88m%E4%B8%BA%E5%AE%9E%E5%B8%B8%E6%95%B0%EF%BC%89%EF%BC%8E+%EF%BC%881%EF%BC%89%E8%8B%A5%E5%87%BD%E6%95%B0y%3Df%EF%BC%88x%EF%BC%89%E5%9B%BE%E8%B1%A1%E4%B8%8A%E5%8A%A8%E7%82%B9P%E5%88%B0%E5%AE%9A%E7%82%B9Q%EF%BC%880%2C2%EF%BC%89%E7%9A%84%E8%B7%9D%E7%A6%BB%E7%9A%84%E6%9C%80%E5%B0%8F%E5%80%BC%E4%B8%BA%E6%A0%B9%E5%8F%B72%2C%E6%B1%82%E5%AE%9E%E6%95%B0m%E7%9A%84%EF%BC%9B%EF%BC%882%EF%BC%89%E8%8B%A5%E5%87%BD%E6%95%B0y%3Df%EF%BC%88x%EF%BC%89%E5%9C%A8%E5%8C%BA%E9%97%B4%5B2%2C%2B%E2%88%9E%EF%BC%89%E4%B8%8A%E6%98%AF%E5%A2%9E%E5%87%BD%E6%95%B0)
(2014•嘉定区一模)已知函数f(x)=x+m/x+2(m为实常数). (1)若函数y=f(x)图象上动点P到定点Q(0,2)的距离的最小值为根号2,求实数m的;(2)若函数y=f(x)在区间[2,+∞)上是增函数
(2014•嘉定区一模)已知函数f(x)=x+m/x+2(m为实常数). (1)若函数y=f(x)图象上动点P到定点
Q(0,2)的距离的最小值为根号2,求实数m的;(2)若函数y=f(x)在区间[2,+∞)上是增函数,试用函数单调性的定义求实数m的取值范围;
{题目中分母是x,不是x+2}
(2014•嘉定区一模)已知函数f(x)=x+m/x+2(m为实常数). (1)若函数y=f(x)图象上动点P到定点Q(0,2)的距离的最小值为根号2,求实数m的;(2)若函数y=f(x)在区间[2,+∞)上是增函数
发了图片,