√(x-2)²+y² + √(x+2)²+y² =10
根据椭圆的定义得
c=2,a=5
b^2=a^2-c^2=21
因此椭圆标准方程是
x^2/25+y^2/21=1c=2怎么求的√(x-2)²+y² + √(x+2)²+y² =10x后面的就是c呀
方程 √(x-2)²+y² + √(x-2)²+y² =10,化简成椭圆的标准方程
方程 √(x-2)²+y² + √(x-2)²+y² =10,化简成椭圆的标准方程
数学人气:722 ℃时间:2020-04-04 07:46:53
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