{"categories":["\u6570\u5b66"],"version":"1.0","author_url":"https://blog.hatena.ne.jp/ohtorii/","url":"https://ohtorii.hatenadiary.jp/entry/20150324/p1","width":"100%","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/o/ohtorii/20150524/20150524135025.png","title":"wxMaxima\u3067\u30af\u30a9\u30fc\u30bf\u30cb\u30aa\u30f3\u306e\u7a4d\u3092\u8a08\u7b97\u3059\u308b\u3002","provider_name":"Hatena Blog","published":"2015-03-24 00:00:00","author_name":"ohtorii","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fohtorii.hatenadiary.jp%2Fentry%2F20150324%2Fp1\" title=\"wxMaxima\u3067\u30af\u30a9\u30fc\u30bf\u30cb\u30aa\u30f3\u306e\u7a4d\u3092\u8a08\u7b97\u3059\u308b\u3002 - \u3068\u308a\u3042\u3048\u305a\u65e5\u8a18\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","blog_title":"\u3068\u308a\u3042\u3048\u305a\u65e5\u8a18","height":"190","blog_url":"https://ohtorii.hatenadiary.jp/","provider_url":"https://hatena.blog","type":"rich","description":"wxMaxima version /* quaternion qmul(quaternion l, quaternion r); */ qmul(l,r) := [ l[1]*r[4] + l[4]*r[1] + l[2]*r[3] - l[3]*r[2] , l[2]*r[4] + l[4]*r[2] + l[3]*r[1] - l[1]*r[3] , l[3]*r[4] + l[4]*r[3] + l[1]*r[2] - l[2]*r[1] , l[4]*r[4] - l[1]*r[1] - l[2]*r[2] - l[3]*r[3] ]; q1:[x,y,z,w]; q2:[0,0,0,\u2026"}