{"id":920,"date":"2021-10-09T09:48:56","date_gmt":"2021-10-09T07:48:56","guid":{"rendered":"https:\/\/www.pealfa.duckdns.org\/wordpress\/?p=920"},"modified":"2021-10-09T09:48:56","modified_gmt":"2021-10-09T07:48:56","slug":"signo-de-una-expresion-algebraica-inecuaciones","status":"publish","type":"post","link":"https:\/\/www.pealfa.duckdns.org\/wordpress\/?p=920","title":{"rendered":"Signo de una expresi\u00f3n algebraica. Inecuaciones."},"content":{"rendered":"<p>Hoy vamos a dedicar unos momentos a analizar el signo de una expresi\u00f3n algebraica. Los n\u00fameros reales se clasifican en positivos (mayores que 0), negativos (menores que 0) y el propio 0 que los separa.<\/p>\n<p>Es relarivamente f\u00e1cil determinar el signo de un n\u00famero, pero \u00bfy el signo de una f\u00f3rmula que depende de una letra (variable)? Eso es m\u00e1s dif\u00edcil, porque el resultado de la f\u00f3rmula depender\u00e1 del n\u00famero que sustituyanos en la variable y as\u00ed el signo variar\u00e1. Pero para expresiones algebraicas sencillas hay un procedimiento simple que nos permitir\u00e1 analizarlo.<\/p>\n<p>Es lo que intentaremos para trabajar de forma pr\u00e1ctica:<\/p>\n<fieldset style=\"border: 1px solid #8A0808; padding: 10px;\">\n<div style=\"text-align: center;\">CUESTI\u00d3N<\/div>\n<p>\nConsideremos la fracci\u00f3n<br \/>\n\\[ f=\\frac{x-1}{x-4}\\]<\/p>\n<ol>\n<li>Estudiemos el signo de la fracci\u00f3n seg\u00fan los valores num\u00e9ricos que tome la variable \\(x\\).<\/li>\n<p><\/p>\n<li>\u00bfPara qu\u00e9 valores de \\(x\\) es \\(f>0\\).<\/li>\n<p><\/p>\n<li>\u00bfCu\u00e1ndo es \\(f\\geq0\\)?<\/li>\n<p><\/p>\n<li>Resolvamos la inecuaci\u00f3n \\(f\\leq0\\).<\/li>\n<\/ol>\n<\/fieldset>\n<p>En el siguiente v\u00eddeo lo resolvemos paso a paso con todo detalle:<\/p>\n<div style=\"text-align: center;\"><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/qvZAgsp_wrY\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<p>Es muy importante que practiques con el m\u00e9todo, pues el an\u00e1lisis del signo de una f\u00f3rmula es algo importante que necesitar\u00e1s dominar si sigues adentr\u00e1ndote en el estudio de las funciones. Hasta la vista.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hoy vamos a dedicar unos momentos a analizar el signo de una expresi\u00f3n algebraica. Los n\u00fameros reales se clasifican en positivos (mayores [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"post-templates\/post_nosidebar.php","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[65,32,50],"class_list":["post-920","post","type-post","status-publish","format-standard","hentry","category-matematicas-i","tag-algebra","tag-aritmetica","tag-video"],"_links":{"self":[{"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/920","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=920"}],"version-history":[{"count":1,"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/920\/revisions"}],"predecessor-version":[{"id":921,"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/920\/revisions\/921"}],"wp:attachment":[{"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=920"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=920"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pealfa.duckdns.org\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=920"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}