{"id":175046469,"date":"2024-05-23T18:50:09","date_gmt":"2024-05-23T16:50:09","guid":{"rendered":"https:\/\/xmau.com\/wp\/archivi\/?p=175046469"},"modified":"2024-05-23T18:50:09","modified_gmt":"2024-05-23T16:50:09","slug":"howto-mettere-la-barra-sopra-i-radicandi-in-html","status":"publish","type":"post","link":"https:\/\/xmau.com\/archivi\/2024\/05\/23\/howto-mettere-la-barra-sopra-i-radicandi-in-html\/","title":{"rendered":"HOWTO: mettere la barra sopra i radicandi in HTML"},"content":{"rendered":"<p>HTML (ma nemmeno Word, se per questo) ha un vero simbolo di radice quadrata, il che significa che tutte le volte che uno scrive qualcosa sotto radice deve mettere il radicando tra parentesi per capire cosa usare.<br \/>\nBene: ho scoperto (via <a href=\"https:\/\/www.cut-the-knot.org\/\">Cut The Knot<\/a>) che basta usare un po&#8217; di CSS, per la precisione <tt>&lt;span style=\"text-decoration:overline;\"&gt;<\/tt> intorno al radicando. <\/p>\n<p>Esempio pratico: x = (&minus;b &plusmn; &radic;<span style=\"text-decoration:overline;\">b&sup2; &minus; 4ac<\/span>)\/2a.<\/p>\n<p>Chiaro che \u00e8 meglio usare MathJax e scrivere $ x = \\frac{-b \\pm \\sqrt{b^2 &#8211; 4ac}}{2a} $, ma non sempre si ha MathJax a disposizione&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ok, in CSS, ma va bene lo stesso 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