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一、对2003年全国高中联赛第13题,可以如下利用柯西不等式,求得证明. 题13设3/2≤x≤5,证明不等式解待证式变为
First, for the 13th issue of the 2003 national high school league, we can use the Cauchy inequality to prove it. Question 13 Let 3/2 ≤ x ≤ 5, prove that the inequality solution to the proof becomes