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2015年清华大学领军计划自主招生的数学试卷由30道选择题构成,每题提供4个选项而正确答案不一定唯一选取,其中的第27题是:引例设非负实数x、y满足2x+y=1,则x+(x~2+y~2)~(1/2)的( )(A)最小值为4/5(B)最小值为2/5
The 2015 Tsinghua University Leading Program’s self-enrollment math test paper consists of 30 multiple choice questions. Each question provides 4 options and the correct answer is not necessarily the only one. The 27th question is: Quotation Suppose Nonnegative Real Number x, y Meet 2x + (A) minimum value of 4/5 (B) for x + (x ~ 2 + y ~ 2) ~ (1/2) is 2/5