silver_dragon https://blog.hatena.ne.jp/silver_dragon/ 涼風我談の鱗 https://silver-dragon.hatenablog.com/ 単双曲回転面 式） S(u,v)=( x(u) cos v, x(u) sin v, z(u) ) ( -1≦u＜1, -π≦v＜π) x(u)=a cosh u, z(u)=b sinh u ( a=1 , b=1 ) 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fsilver-dragon.hatenablog.com%2Fentry%2F20120629%2F1340989759" title="単双曲回転面 - 涼風我談の鱗" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/s/silver_dragon/20120630/20120630020806.png Hatena Blog https://hatena.blog 2012-06-29 02:09:19 rich https://silver-dragon.hatenablog.com/entry/20120629/1340989759 1.0 100%