--- title: 懸鏈繩公式 tags: math --- # Catenary 懸鏈繩 $L=$ 曲線中x=0與y軸間距離 $L\tan\theta=$ 曲線中y=0與x軸間距離 $a=\cfrac{L}{\tan\theta}$ $f(x)=2a(\cosh(\cfrac{x}{a})-1)-L\tan\theta$
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