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设(a₁/b₂)=(a₂/b₂)=·······=(an/bn) (a₁,a₂,a₃···
设(a₁/b₂)=(a₂/b₂)=·······=(an/bn) (a₁,a₂,a₃·······an,b₁,b₂,b₃······bn都是正整数)
求:√(a₁b₁) +√(a₂b₂)+····+√(an*bn)=√(a₁+a₂+···an) *√(b¹+b²+····+bn)
人气:354 ℃ 时间:2020-02-27 21:01:17
解答
x1乘以x2=3/2,且两根同号
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