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在原高二教材中,对于基本不等式不但给出两项和三项,而且推广到多项,高二新教材中则删去了三项和多项,只保留下两项.公式如下:
In the original high school textbooks, the basic inequalities were not only given two or three items, but also extended to multiple items. In the high school textbooks, three or more items were deleted, leaving only the next two. The formula is as follows: