{"id":6740,"date":"2011-04-11T01:23:24","date_gmt":"2011-04-11T00:23:24","guid":{"rendered":"https:\/\/www.acasinhadamatematica.pt\/?p=6740"},"modified":"2022-01-22T11:16:27","modified_gmt":"2022-01-22T11:16:27","slug":"um-quadro-de-sinal","status":"publish","type":"post","link":"https:\/\/www.acasinhadamatematica.pt\/?p=6740","title":{"rendered":"Um quadro de sinal"},"content":{"rendered":"<p><ul id='GTTabs_ul_6740' class='GTTabs' style='display:none'>\n<li id='GTTabs_li_0_6740' class='GTTabs_curr'><a  id=\"6740_0\" onMouseOver=\"GTTabsShowLinks('Enunciado'); return true;\"  onMouseOut=\"GTTabsShowLinks();\"  class='GTTabsLinks'>Enunciado<\/a><\/li>\n<li id='GTTabs_li_1_6740' ><a  id=\"6740_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_6740'>\n<span class='GTTabs_titles'><b>Enunciado<\/b><\/span><\/p>\n<p>O quadro seguinte d\u00e1-nos o sinal de uma fun\u00e7\u00e3o f, definida em $\\mathbb{R}$:<\/p>\n<p><a href=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"6741\" data-permalink=\"https:\/\/www.acasinhadamatematica.pt\/?attachment_id=6741\" data-orig-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal.jpg\" data-orig-size=\"626,127\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;HP pstc4380&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Quadro de sinal\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal.jpg\" class=\"aligncenter wp-image-6741\" title=\"Quadro de sinal\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal-300x60.jpg\" alt=\"\" width=\"500\" height=\"101\" srcset=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal-300x60.jpg 300w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal-150x30.jpg 150w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal-400x81.jpg 400w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal.jpg 626w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<p>Determine o dom\u00ednio das fun\u00e7\u00f5es seguintes:<\/p>\n<ol>\n<li>${{f}_{1}}:x\\to \\frac{1}{f(x)}$<\/li>\n<li>${{f}_{2}}:x\\to \\sqrt{f(x)}$<\/li>\n<li>${{f}_{3}}:x\\to \\frac{1}{\\sqrt{f(x)}}$<\/li>\n<\/ol>\n<p><div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_next'><a href='#GTTabs_ul_6740' onClick='GTTabs_show(1,6740)'>Resolu\u00e7\u00e3o &gt;&gt;<\/a><\/span><\/div><\/div>\n\n<div class='GTTabs_divs' id='GTTabs_1_6740'>\n<span class='GTTabs_titles'><b>Resolu\u00e7\u00e3o<\/b><\/span><!--more--><\/p>\n<p><a href=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal.jpg\"><img loading=\"lazy\" decoding=\"async\" data-attachment-id=\"6741\" data-permalink=\"https:\/\/www.acasinhadamatematica.pt\/?attachment_id=6741\" data-orig-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal.jpg\" data-orig-size=\"626,127\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;HP pstc4380&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;}\" data-image-title=\"Quadro de sinal\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal.jpg\" class=\"aligncenter wp-image-6741\" title=\"Quadro de sinal\" src=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal-300x60.jpg\" alt=\"\" width=\"500\" height=\"101\" srcset=\"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal-300x60.jpg 300w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal-150x30.jpg 150w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal-400x81.jpg 400w, https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/tabelasinal.jpg 626w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/a><\/p>\n<\/p>\n<ol>\n<li>${{D}_{{{f}_{1}}}}=\\left\\{ x\\in \\mathbb{R}:f(x)\\ne 0 \\right\\}=\\mathbb{R}\\backslash \\left\\{ -3,2,4 \\right\\}$.<br \/>\n\u00ad<\/li>\n<li>${{D}_{{{f}_{2}}}}=\\left\\{ x\\in \\mathbb{R}:f(x)\\ge 0 \\right\\}=\\left[ -3,2 \\right]\\cup \\left[ 4,+\\infty\u00a0 \\right[$.<br \/>\n\u00ad<\/li>\n<li>${{D}_{{{f}_{3}}}}=\\left\\{ x\\in \\mathbb{R}:f(x)&gt;0 \\right\\}=\\left] -3,2 \\right[\\cup \\left] 4,+\\infty\u00a0 \\right[$.<\/li>\n<\/ol>\n<div class='GTTabsNavigation' style='display:none'><span class='GTTabs_nav_prev'><a href='#GTTabs_ul_6740' onClick='GTTabs_show(0,6740)'>&lt;&lt; Enunciado<\/a><\/span><\/div><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Enunciado Resolu\u00e7\u00e3o Enunciado O quadro seguinte d\u00e1-nos o sinal de uma fun\u00e7\u00e3o f, definida em $\\mathbb{R}$: Determine o dom\u00ednio das fun\u00e7\u00f5es seguintes: ${{f}_{1}}:x\\to \\frac{1}{f(x)}$ ${{f}_{2}}:x\\to \\sqrt{f(x)}$ ${{f}_{3}}:x\\to \\frac{1}{\\sqrt{f(x)}}$ Resolu\u00e7\u00e3o &gt;&gt; Resolu\u00e7\u00e3o &lt;&lt; Enunciado<\/p>\n","protected":false},"author":1,"featured_media":20890,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[98,97,157],"tags":[158],"series":[],"class_list":["post-6740","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-11--ano","category-aplicando","category-funcoes-com-radicais","tag-funcoes-com-radicais-2"],"views":6101,"jetpack_featured_media_url":"https:\/\/www.acasinhadamatematica.pt\/wp-content\/uploads\/2011\/04\/11V2Pag206-83_520x245.png","jetpack_sharing_enabled":true,"jetpack_likes_enabled":true,"_links":{"self":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/6740","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=6740"}],"version-history":[{"count":0,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/posts\/6740\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=\/wp\/v2\/media\/20890"}],"wp:attachment":[{"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6740"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.acasinhadamatematica.pt\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=6740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}