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[几何] 求助:一个等式的化简

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lemondian posted 2021-5-21 17:44 |Read mode
求助万能的论坛:
下面这个等式:
$(1-e^2)(mk_1-nk_2)^2+(m-n)^2k_1^2k_2^2=a^2(1-e^2)(k_1-k_2)^2$。(其中$e$是椭圆的离心率,$a$是椭圆的长半轴的值)
能不能化成$k_2=\cdots $的形式(等号右边不再含$k_2$)

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kuing posted 2021-5-22 00:18
不就是关于 k_2 的二次方程么,理论上能解啊,用求根公式

还是给出原题吧

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