椭圆x^2/25+y^2/9=1上有三点A(x1,y1)、B(4,9/5)、C(x2,y2)与右焦点F(4,0)的距离成等差数列,则x1+x2的值为(A)6 (B)41/4 (C)8 (D)不确定
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![椭圆x^2/25+y^2/9=1上有三点A(x1,y1)、B(4,9/5)、C(x2,y2)与右焦点F(4,0)的距离成等差数列,则x1+x2的值为(A)6 (B)41/4 (C)8 (D)不确定](/uploads/image/z/5453257-49-7.jpg?t=%E6%A4%AD%E5%9C%86x%5E2%2F25%2By%5E2%2F9%3D1%E4%B8%8A%E6%9C%89%E4%B8%89%E7%82%B9A%28x1%2Cy1%29%E3%80%81B%284%2C9%2F5%29%E3%80%81C%28x2%2Cy2%29%E4%B8%8E%E5%8F%B3%E7%84%A6%E7%82%B9F%284%2C0%29%E7%9A%84%E8%B7%9D%E7%A6%BB%E6%88%90%E7%AD%89%E5%B7%AE%E6%95%B0%E5%88%97%2C%E5%88%99x1%2Bx2%E7%9A%84%E5%80%BC%E4%B8%BA%28A%296+%28B%2941%2F4+%28C%298+%28D%29%E4%B8%8D%E7%A1%AE%E5%AE%9A)
椭圆x^2/25+y^2/9=1上有三点A(x1,y1)、B(4,9/5)、C(x2,y2)与右焦点F(4,0)的距离成等差数列,则x1+x2的值为(A)6 (B)41/4 (C)8 (D)不确定
椭圆x^2/25+y^2/9=1上有三点A(x1,y1)、B(4,9/5)、C(x2,y2)与右焦点F(4,0)的距离成等差数列,
则x1+x2的值为
(A)6 (B)41/4 (C)8 (D)不确定
椭圆x^2/25+y^2/9=1上有三点A(x1,y1)、B(4,9/5)、C(x2,y2)与右焦点F(4,0)的距离成等差数列,则x1+x2的值为(A)6 (B)41/4 (C)8 (D)不确定
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