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数学
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若x>=0,则x^2+1/x^2+1的最小值为?(具体解题步骤)
式子应该是:x^2+1/(x^2+1)
人气:442 ℃ 时间:2020-06-13 19:55:27
解答
y=(x^2+1)+1/(x^2+1) -1
当x≥0,(x^2+1)≥1,
ymin=1 此时x=0
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