【参数方程】消去参数k x=-8k²/(2k²+1),y=4k/(2k²+1)x=-8k²/(2k²+1),y=4k/(2k²+1)参数方程消去参数k怎么消去
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![【参数方程】消去参数k x=-8k²/(2k²+1),y=4k/(2k²+1)x=-8k²/(2k²+1),y=4k/(2k²+1)参数方程消去参数k怎么消去](/uploads/image/z/8438228-44-8.jpg?t=%E3%80%90%E5%8F%82%E6%95%B0%E6%96%B9%E7%A8%8B%E3%80%91%E6%B6%88%E5%8E%BB%E5%8F%82%E6%95%B0k+x%3D-8k%26%23178%3B%2F%282k%26%23178%3B%2B1%29%2Cy%3D4k%2F%282k%26%23178%3B%2B1%29x%3D-8k%26%23178%3B%2F%282k%26%23178%3B%2B1%29%2Cy%3D4k%2F%282k%26%23178%3B%2B1%29%E5%8F%82%E6%95%B0%E6%96%B9%E7%A8%8B%E6%B6%88%E5%8E%BB%E5%8F%82%E6%95%B0k%E6%80%8E%E4%B9%88%E6%B6%88%E5%8E%BB)
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【参数方程】消去参数k x=-8k²/(2k²+1),y=4k/(2k²+1)x=-8k²/(2k²+1),y=4k/(2k²+1)参数方程消去参数k怎么消去
【参数方程】消去参数k x=-8k²/(2k²+1),y=4k/(2k²+1)
x=-8k²/(2k²+1),y=4k/(2k²+1)
参数方程消去参数k怎么消去
【参数方程】消去参数k x=-8k²/(2k²+1),y=4k/(2k²+1)x=-8k²/(2k²+1),y=4k/(2k²+1)参数方程消去参数k怎么消去
x/y=-2k,得k=-x/(2y)
再将上式代入y公式中,可消去k
你可以自己计算.
我的计算结果是x^2+2Y^2-4x=0