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数学
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若非零实数a,b(a≠b)满足,a²+a-2014=0,b²+b-2014=0,求1/a+1/b的值
人气:490 ℃ 时间:2020-03-28 11:24:01
解答
若非零实数a,b(a≠b)满足,a²+a-2014=0,b²+b-2014=0,
∴a+b=-1;
ab=-2014;
求1/a+1/b的值
=(a+b)/(ab)
=(-1)/(-2014)
=1/2014;
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