已知x,y为实数,且满足y=根号2x-4+根号4-2x+3,求x的y次方的立方根
人气:209 ℃ 时间:2019-08-20 12:19:28
解答
y=√(2x-4) +√(4-2x)+3
根号下大于等于0
2x-4≥0,得x≥2
4-2x≥0,得x≤2
所以x=2,则y=3
则(x^y)^(1/3)=2
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