{"id":5365,"date":"2015-11-30T17:31:20","date_gmt":"2015-11-30T16:31:20","guid":{"rendered":"http:\/\/www.matematicaok.it\/?p=5365"},"modified":"2015-12-01T11:09:34","modified_gmt":"2015-12-01T10:09:34","slug":"esercizio-19-fascio-di-rette","status":"publish","type":"post","link":"https:\/\/www.matematicaok.com\/?p=5365","title":{"rendered":"Esercizio 19 \u2013 Fascio di rette"},"content":{"rendered":"<p>Dato il fascio di rette di equazione <em>(2 + k) x + (k &#8211; 1) y + 3 &#8211; k = 0<\/em>, determinare:<br \/>\n1) le coordinate del centro del fascio;<br \/>\n2) il valore di k per cui vi \u00e8 una retta del fascio parallela alla retta passante per A (2 ; 1) e per \u00a0B(0 ; 3) e giustificare il risultato ottenuto;<br \/>\n3) i valori di k per i quali vi sono rette del fascio che formano angoli ottusi con l&#8217;asse x.<\/p>\n<p><a href=\"http:\/\/www.matematicaok.it\/wp-content\/uploads\/2015\/11\/Es19a_Fasci.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-5415\" src=\"http:\/\/www.matematicaok.it\/wp-content\/uploads\/2015\/11\/Es19a_Fasci-765x1024.jpg\" alt=\"Fascio di rette\" width=\"677\" height=\"906\" srcset=\"https:\/\/www.matematicaok.com\/wp-content\/uploads\/2015\/11\/Es19a_Fasci-765x1024.jpg 765w, https:\/\/www.matematicaok.com\/wp-content\/uploads\/2015\/11\/Es19a_Fasci-224x300.jpg 224w, https:\/\/www.matematicaok.com\/wp-content\/uploads\/2015\/11\/Es19a_Fasci.jpg 1240w\" sizes=\"auto, (max-width: 677px) 100vw, 677px\" \/><\/a> <a href=\"http:\/\/www.matematicaok.it\/wp-content\/uploads\/2015\/11\/Es19b_Fasci.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-5416\" src=\"http:\/\/www.matematicaok.it\/wp-content\/uploads\/2015\/11\/Es19b_Fasci-1024x756.jpg\" alt=\"Fascio di rette\" width=\"677\" height=\"500\" srcset=\"https:\/\/www.matematicaok.com\/wp-content\/uploads\/2015\/11\/Es19b_Fasci-1024x756.jpg 1024w, https:\/\/www.matematicaok.com\/wp-content\/uploads\/2015\/11\/Es19b_Fasci-300x221.jpg 300w, https:\/\/www.matematicaok.com\/wp-content\/uploads\/2015\/11\/Es19b_Fasci.jpg 1240w\" sizes=\"auto, (max-width: 677px) 100vw, 677px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dato il fascio di rette di equazione (2 + k) x + (k &#8211; 1) y + 3 &#8211; k = 0, determinare: 1) le coordinate del centro del fascio; 2) il valore di k per cui vi \u00e8 una retta del fascio parallela alla retta passante per A (2 ; 1) e per \u00a0B(0 ; 3) e giustificare il risultato ottenuto; 3) i valori di k per i quali&hellip; <\/p>\n","protected":false},"author":1,"featured_media":5415,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[127,128,140],"tags":[],"class_list":["post-5365","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-esercizi-svolti","category-geometria-analitica","category-retta"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/www.matematicaok.com\/wp-content\/uploads\/2015\/11\/Es19a_Fasci.jpg","jetpack_shortlink":"https:\/\/wp.me\/p85Wmq-1ox","_links":{"self":[{"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=\/wp\/v2\/posts\/5365","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5365"}],"version-history":[{"count":3,"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=\/wp\/v2\/posts\/5365\/revisions"}],"predecessor-version":[{"id":5422,"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=\/wp\/v2\/posts\/5365\/revisions\/5422"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=\/wp\/v2\/media\/5415"}],"wp:attachment":[{"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5365"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5365"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.matematicaok.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5365"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}