消参法(数学)已知x=-4k^2/(1-k^2)-2y=-4k/(1-k^2)如何消去参数k得x^2-y^2=4?我不太明白消参法怎么用.希望能给我出道用消参法做的向量题,(思路):已知两个向量a,b,它们的表达式分别含
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![消参法(数学)已知x=-4k^2/(1-k^2)-2y=-4k/(1-k^2)如何消去参数k得x^2-y^2=4?我不太明白消参法怎么用.希望能给我出道用消参法做的向量题,(思路):已知两个向量a,b,它们的表达式分别含](/uploads/image/z/5354463-39-3.jpg?t=%E6%B6%88%E5%8F%82%E6%B3%95%EF%BC%88%E6%95%B0%E5%AD%A6%EF%BC%89%E5%B7%B2%E7%9F%A5x%3D-4k%EF%BC%BE2%2F%281-k%EF%BC%BE2%29-2y%3D-4k%2F%281-k%EF%BC%BE2%EF%BC%89%E5%A6%82%E4%BD%95%E6%B6%88%E5%8E%BB%E5%8F%82%E6%95%B0k%E5%BE%97x%EF%BC%BE2-y%EF%BC%BE2%3D4%3F%E6%88%91%E4%B8%8D%E5%A4%AA%E6%98%8E%E7%99%BD%E6%B6%88%E5%8F%82%E6%B3%95%E6%80%8E%E4%B9%88%E7%94%A8.%E5%B8%8C%E6%9C%9B%E8%83%BD%E7%BB%99%E6%88%91%E5%87%BA%E9%81%93%E7%94%A8%E6%B6%88%E5%8F%82%E6%B3%95%E5%81%9A%E7%9A%84%E5%90%91%E9%87%8F%E9%A2%98%2C%EF%BC%88%E6%80%9D%E8%B7%AF%EF%BC%89%EF%BC%9A%E5%B7%B2%E7%9F%A5%E4%B8%A4%E4%B8%AA%E5%90%91%E9%87%8Fa%2Cb%2C%E5%AE%83%E4%BB%AC%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%88%86%E5%88%AB%E5%90%AB)
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