{"id":12952,"date":"2017-11-01T10:19:30","date_gmt":"2017-11-01T10:19:30","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=12952"},"modified":"2022-01-09T00:01:51","modified_gmt":"2022-01-09T00:01:51","slug":"dois-enquadramentos","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=12952","title":{"rendered":"Dois enquadramentos"},"content":{"rendered":"<p><ul id='GTTabs_ul_12952' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_12952' class='GTTabs_curr'><a  id=\"12952_0\" onMouseOver=\"GTTabsShowLinks('Enunciado'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Enunciado<\/a><\/li>\n<li id='GTTabs_li_1_12952' ><a  id=\"12952_1\" onMouseOver=\"GTTabsShowLinks('Resolu\u00e7\u00e3o'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Resolu\u00e7\u00e3o<\/a><\/li>\n<\/ul>\n\n<div class='GTTabs_divs GTTabs_curr_div' id='GTTabs_0_12952'>\n<span class='GTTabs_titles'><b>Enunciado<\/b><\/span><\/p>\n<p>Considera os seguintes enquadramentos de x e de y:<\/p>\n<p>\\[\\begin{array}{*{20}{c}}{ &#8211; 2,3 &lt; x &lt; &#8211; 2,1}&amp;{\\rm{e}}&amp;{ &#8211; 2,3 &lt; x &lt; &#8211; 2,1}\\end{array}\\]<\/p>\n<p>Escreve o intervalo a que pertencem \\(x + y\\) e \\(x \\times y\\).<br \/>\nApresenta a tua resolu\u00e7\u00e3o.<\/p>\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_12952' onClick='GTTabs_show(1,12952)'>Resolu\u00e7\u00e3o &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_12952'>\n<span class='GTTabs_titles'><b>Resolu\u00e7\u00e3o<\/b><\/span><!--more--><\/p>\n<p>\\[\\begin{array}{*{20}{c}}{ &#8211; 2,3 &lt; x &lt; &#8211; 2,1}\\\\{5,3 &lt; y &lt; 5,4}\\\\\\hline{3,0 &lt; x + y &lt; 3,3}\\end{array}\\]<\/p>\n<p>Logo,\u00a0\\(\\left( {x + y} \\right) \\in \\left] {3,0;\\;3,3} \\right[\\).<br \/>\n\u00ad<\/p>\n<p>Como\u00a0\\(\\begin{array}{*{20}{c}}{ &#8211; 2,3 &lt; x &lt; &#8211; 2,1}&amp; \\Leftrightarrow &amp;{2,1 &lt; &#8211; x &lt; 2,3}\\end{array}\\), vem:<\/p>\n<p>\\[\\begin{array}{*{20}{c}}{2,1 &lt; &#8211; x &lt; 2,3}\\\\{5,3 &lt; y &lt; 5,4}\\\\\\hline{11,13 &lt; &#8211; x \\times y &lt; 12,42}\\\\\\hline{ &#8211; 12,42 &lt; x \\times y &lt; &#8211; 11,13}\\end{array}\\]<\/p>\n<p>Logo,\u00a0\\(\\left( {x \\times y} \\right) \\in \\left] { &#8211; 12,42;\\; &#8211; 11,13} \\right[\\).<\/p>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_12952' onClick='GTTabs_show(0,12952)'>&lt;&lt; Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Enunciado Resolu\u00e7\u00e3o Enunciado Considera os seguintes enquadramentos de x e de y: \\[\\begin{array}{*{20}{c}}{ &#8211; 2,3 &lt; x &lt; &#8211; 2,1}&amp;{\\rm{e}}&amp;{ &#8211; 2,3 &lt; x &lt; &#8211; 2,1}\\end{array}\\] Escreve o intervalo a que pertencem \\(x&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":19188,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[213,97,258],"tags":[443,445],"series":[],"class_list":["post-12952","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-9--ano","category-aplicando","category-os-numeros-reais","tag-enquadramento","tag-intervalo-de-numeros-reais"],"views":3374,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2021\/12\/Mat74.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/12952","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=12952"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/12952\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=12952"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=12952"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=12952"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=12952"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}