8kx²-ky²=8怎么化简到x²/(1/k)-y²/(8/k)=1 忘了是怎么解的 了
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![8kx²-ky²=8怎么化简到x²/(1/k)-y²/(8/k)=1 忘了是怎么解的 了](/uploads/image/z/11601419-59-9.jpg?t=8kx%26%23178%3B-ky%26%23178%3B%3D8%E6%80%8E%E4%B9%88%E5%8C%96%E7%AE%80%E5%88%B0x%26%23178%3B%2F%281%2Fk%29-y%26%23178%3B%2F%288%2Fk%29%3D1+%E5%BF%98%E4%BA%86%E6%98%AF%E6%80%8E%E4%B9%88%E8%A7%A3%E7%9A%84+%E4%BA%86)
8kx²-ky²=8怎么化简到x²/(1/k)-y²/(8/k)=1 忘了是怎么解的 了
8kx²-ky²=8怎么化简到x²/(1/k)-y²/(8/k)=1 忘了是怎么解的 了
8kx²-ky²=8怎么化简到x²/(1/k)-y²/(8/k)=1 忘了是怎么解的 了
8kx^2-ky^=8
先两边同时除以8
就是kx^-(ky^2)/8=1
由于kx^=x÷(1/k)=x/(1/k)
同理ky^2/8=y^2/8÷(1/k)=y^2/(8/k)
带入就是:x/(1/k)-y^2/(8/k)=1
楼上正解!