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original poster
hbghlyj
posted 2024-3-1 17:44
Last edited by hbghlyj 2024-3-12 00:45$p,e$為定值。
$r_1= p/(1-e\cos \theta_1)$
$r_2= p/(1-e\cos \theta_2)$
如何满足方程$r_{1}\rmd\theta _{1}=r_{2}\rmd\theta _{2}$?即
$$ \frac{\rmd\theta _1}{1 - e\cos(θ_1)}=\frac{\rmd\theta _2}{1 - e\cos(θ_2)}$$
能否化簡
已知$r_{1}+r_{2}=$定值
即$1/(1-e\cos \theta_1)+1/(1-e\cos \theta_2)=$定值 |
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