如图,动点M到两定点A(-1,0)、B(2,0)构成△MAB,且∠MBA=2∠MAB,设动点M的轨迹为C.(1)求轨迹C倒数第三行的范围知怎么得出的 如图,动点M到两定点A(-1,0)、B(2,0)构成△MAB,且∠MBA=2∠
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![如图,动点M到两定点A(-1,0)、B(2,0)构成△MAB,且∠MBA=2∠MAB,设动点M的轨迹为C.(1)求轨迹C倒数第三行的范围知怎么得出的 如图,动点M到两定点A(-1,0)、B(2,0)构成△MAB,且∠MBA=2∠](/uploads/image/z/11667921-33-1.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%8A%A8%E7%82%B9M%E5%88%B0%E4%B8%A4%E5%AE%9A%E7%82%B9A%EF%BC%88-1%2C0%EF%BC%89%E3%80%81B%EF%BC%882%2C0%EF%BC%89%E6%9E%84%E6%88%90%E2%96%B3MAB%2C%E4%B8%94%E2%88%A0MBA%3D2%E2%88%A0MAB%2C%E8%AE%BE%E5%8A%A8%E7%82%B9M%E7%9A%84%E8%BD%A8%E8%BF%B9%E4%B8%BAC.%EF%BC%881%EF%BC%89%E6%B1%82%E8%BD%A8%E8%BF%B9C%E5%80%92%E6%95%B0%E7%AC%AC%E4%B8%89%E8%A1%8C%E7%9A%84%E8%8C%83%E5%9B%B4%E7%9F%A5%E6%80%8E%E4%B9%88%E5%BE%97%E5%87%BA%E7%9A%84+%E5%A6%82%E5%9B%BE%EF%BC%8C%E5%8A%A8%E7%82%B9M%E5%88%B0%E4%B8%A4%E5%AE%9A%E7%82%B9A%EF%BC%88-1%EF%BC%8C0%EF%BC%89%E3%80%81B%EF%BC%882%EF%BC%8C0%EF%BC%89%E6%9E%84%E6%88%90%E2%96%B3MAB%EF%BC%8C%E4%B8%94%E2%88%A0MBA%3D2%E2%88%A0)
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