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数学
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设z属于C(复数集) 则方程|z+3|+|z-3|=8对应曲线的普通方程为__________
人气:254 ℃ 时间:2020-05-10 18:36:23
解答
z的轨迹可以看作到两个定点(-3,0)(3,0)的距离和为定值的点的轨迹,即椭圆.
c=3,2a=8,a=4,b^2=7,
对应曲线的普通方程为x^2/16+y^2/7=1
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