{"id":4569,"date":"2026-01-20T11:00:44","date_gmt":"2026-01-20T11:00:44","guid":{"rendered":"https:\/\/www.mybestlessons.com\/?page_id=4569"},"modified":"2026-10-19T06:55:48","modified_gmt":"2026-10-19T06:55:48","slug":"%ce%b4%ce%b9%ce%b1%ce%b4%ce%b9%ce%ba%cf%84%cf%85%ce%b1%ce%ba%ce%ac-%ce%bc%ce%b1%ce%b8%ce%ae%ce%bc%ce%b1%cf%84%ce%b1-%ce%bc%ce%b5%cf%81%ce%b9%ce%ba%cf%8e%ce%bd-%ce%b4%ce%b9%ce%b1%cf%86%ce%bf%cf%81","status":"publish","type":"page","link":"https:\/\/toplessons.gr\/?page_id=4569","title":{"rendered":"\u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"4569\" class=\"elementor elementor-4569\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1d7874df e-flex e-con-boxed e-con e-parent\" data-id=\"1d7874df\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-106c5538 elementor-widget elementor-widget-text-editor\" data-id=\"106c5538\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<h2 class=\"wp-block-heading\"><br><\/h2><h2 class=\"wp-block-heading\">\u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2<\/h2>\n<div>&nbsp;<\/div>\n<div>&nbsp;<\/div>\n<p><!-- \/wp:heading --><!-- wp:image {\"id\":5163,\"sizeSlug\":\"full\",\"linkDestination\":\"none\"} --><\/p>\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"572\" class=\"wp-image-5163\" src=\"https:\/\/toplessons.gr\/wp-content\/uploads\/2026\/03\/unnamed-1-1.jpg\" alt=\"\" srcset=\"https:\/\/toplessons.gr\/wp-content\/uploads\/2026\/03\/unnamed-1-1.jpg 1024w, https:\/\/toplessons.gr\/wp-content\/uploads\/2026\/03\/unnamed-1-1-300x168.jpg 300w, https:\/\/toplessons.gr\/wp-content\/uploads\/2026\/03\/unnamed-1-1-768x429.jpg 768w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<p><!-- \/wp:image --><!-- wp:heading --><\/p>\n<h2 class=\"wp-block-heading\"><br><\/h2><h2 class=\"wp-block-heading\">\u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2 (\u039c\u0394\u0395)<\/h2><div><br><\/div>\n<div>&nbsp;<\/div>\n<p><!-- \/wp:heading --><!-- wp:paragraph --><\/p>\n<p>\u0397 \u03bc\u03b5\u03bb\u03ad\u03c4\u03b7 \u03c4\u03c9\u03bd \u039c\u03b5\u03c1\u03b9\u03ba\u03ce\u03bd \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ce\u03bd \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03c9\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03c1\u03af\u03c3\u03b9\u03bc\u03b7\u03c2 \u03c3\u03b7\u03bc\u03b1\u03c3\u03af\u03b1\u03c2 \u03b3\u03b9\u03b1 \u03c6\u03c5\u03c3\u03b9\u03ba\u03bf\u03cd\u03c2, \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03bf\u03cd\u03c2, \u03c7\u03b7\u03bc\u03b9\u03ba\u03bf\u03cd\u03c2 \u03ba\u03b1\u03b9 \u03b3\u03b5\u03bd\u03b9\u03ba\u03cc\u03c4\u03b5\u03c1\u03b1 \u03b3\u03b9\u03b1 \u03bf\u03c0\u03bf\u03b9\u03bf\u03bd\u03b4\u03ae\u03c0\u03bf\u03c4\u03b5 \u03b5\u03bc\u03c0\u03bb\u03ad\u03ba\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03bc\u03b5\u03bb\u03ad\u03c4\u03b7 \u03c6\u03c5\u03c3\u03b9\u03ba\u03ce\u03bd \u03c6\u03b1\u03b9\u03bd\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd<\/p>\n<p><\/p>\n<p><!-- \/wp:paragraph --><!-- wp:paragraph --><\/p>\n<p data-path-to-node=\"1,0\"><b data-path-to-node=\"1,0\" data-index-in-node=\"0\">\u03a3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03bc\u03ac\u03b8\u03b7\u03bc\u03b1, \u03bc\u03b1\u03b8\u03b1\u03af\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c0\u03ce\u03c2 \u03bd\u03b1 \u03bb\u03cd\u03bd\u03bf\u03c5\u03bc\u03b5 \u03b5\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03c0\u03b5\u03c1\u03b9\u03b3\u03c1\u03ac\u03c6\u03bf\u03c5\u03bd \u03c6\u03c5\u03c3\u03b9\u03ba\u03ad\u03c2 \u03b4\u03b9\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b5\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03c4\u03b7 \u03b1\u03b3\u03c9\u03b3\u03ae \u03b8\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2, \u03c4\u03b7 \u03b4\u03b9\u03ac\u03b4\u03bf\u03c3\u03b7 \u03ba\u03c5\u03bc\u03ac\u03c4\u03c9\u03bd \u03ba\u03b1\u03b9 \u03c4\u03b7 \u03c1\u03bf\u03ae \u03c1\u03b5\u03c5\u03c3\u03c4\u03ce\u03bd.<\/b><\/p>\n<p data-path-to-node=\"1,0\">\n<\/p><p data-path-to-node=\"1,1\"><b data-path-to-node=\"1,1\" data-index-in-node=\"0\">\u03a3\u03c5\u03b3\u03ba\u03b5\u03ba\u03c1\u03b9\u03bc\u03ad\u03bd\u03b1, \u03b5\u03bc\u03b2\u03b1\u03b8\u03cd\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03b7 \u039c\u03ad\u03b8\u03bf\u03b4\u03bf \u03c4\u03c9\u03bd \u03a7\u03b1\u03c1\u03b1\u03ba\u03c4\u03b7\u03c1\u03b9\u03c3\u03c4\u03b9\u03ba\u03ce\u03bd, \u03c4\u03b7 \u039c\u03ad\u03b8\u03bf\u03b4\u03bf \u03a7\u03c9\u03c1\u03b9\u03c3\u03bc\u03bf\u03cd \u039c\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ce\u03bd \u03ba\u03b1\u03b9 \u03c4\u03b7 \u03bc\u03ad\u03b8\u03bf\u03b4\u03bf \u03c4\u03bf\u03c5 \u039c\u03b5\u03c4\u03b1\u03c3\u03c7\u03b7\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03bf\u03cd Laplace. \u0395\u03c0\u03b9\u03c0\u03bb\u03ad\u03bf\u03bd, \u03b5\u03be\u03b5\u03c4\u03ac\u03b6\u03bf\u03c5\u03bc\u03b5 \u03c3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03b1 \u03a3\u03b5\u03b9\u03c1\u03ce\u03bd Fourier \u03ba\u03b1\u03b9 \u039c\u03b7 \u0393\u03c1\u03b1\u03bc\u03bc\u03b9\u03ba\u03ce\u03bd \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03c9\u03bd.<\/b><\/p>\n<p data-path-to-node=\"1,3\"><b data-path-to-node=\"1,3\" data-index-in-node=\"0\">\u0392\u03b1\u03c3\u03b9\u03ba\u03ac \u0398\u03ad\u03bc\u03b1\u03c4\u03b1 \u039c\u03b1\u03b8\u03ae\u03bc\u03b1\u03c4\u03bf\u03c2<\/b><\/p>\n<p data-path-to-node=\"1,3\">\n<\/p><p data-path-to-node=\"1,4\">\u0397 \u03cd\u03bb\u03b7 \u03c0\u03b5\u03c1\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03b5\u03b9 \u03b8\u03b5\u03bc\u03b5\u03bb\u03b9\u03ce\u03b4\u03b5\u03b9\u03c2 \u03ad\u03bd\u03bd\u03bf\u03b9\u03b5\u03c2 \u03cc\u03c0\u03c9\u03c2:<\/p>\n<p data-path-to-node=\"1,4\">\n<\/p><ul>\n<li>\n<p style=\"text-align: left;\" data-path-to-node=\"1,5,0,0\"><b data-path-to-node=\"1,5,0,0\" data-index-in-node=\"0\">\u0395\u03b9\u03c3\u03b1\u03b3\u03c9\u03b3\u03ae \u03c3\u03c4\u03b9\u03c2 \u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2:<\/b> \u039f\u03c1\u03b9\u03c3\u03bc\u03bf\u03af \u03ba\u03b1\u03b9 \u03c4\u03b1\u03be\u03b9\u03bd\u03cc\u03bc\u03b7\u03c3\u03b7.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,1,0\"><b data-path-to-node=\"1,5,1,0\" data-index-in-node=\"0\">\u03a0\u03c1\u03bf\u03b2\u03bb\u03ae\u03bc\u03b1\u03c4\u03b1 Sturm\u2013Liouville:<\/b> \u03a0\u03c1\u03bf\u03b2\u03bb\u03ae\u03bc\u03b1\u03c4\u03b1 \u03b9\u03b4\u03b9\u03bf\u03c4\u03b9\u03bc\u03ce\u03bd \u03ba\u03b1\u03b9 \u03bf\u03c1\u03b8\u03bf\u03b3\u03ce\u03bd\u03b9\u03b5\u03c2 \u03c3\u03c5\u03bd\u03b1\u03c1\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,2,0\"><b data-path-to-node=\"1,5,2,0\" data-index-in-node=\"0\">\u039b\u03cd\u03c3\u03b7 D\u2019Alembert \u03b3\u03b9\u03b1 \u03c4\u03bf \u039a\u03cd\u03bc\u03b1:<\/b> \u0395\u03c0\u03af\u03bb\u03c5\u03c3\u03b7 \u03c4\u03b7\u03c2 \u03bc\u03bf\u03bd\u03bf\u03b4\u03b9\u03ac\u03c3\u03c4\u03b1\u03c4\u03b7\u03c2 \u03ba\u03c5\u03bc\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03b5\u03be\u03af\u03c3\u03c9\u03c3\u03b7\u03c2.<\/p>\n<\/li>\n<li style=\"text-align: left;\" data-path-to-node=\"1,5,3,0\"><b data-path-to-node=\"1,5,3,0\" data-index-in-node=\"0\">\u039c\u03ad\u03b8\u03bf\u03b4\u03bf\u03c2 \u03a7\u03c9\u03c1\u03b9\u03c3\u03bc\u03bf\u03cd \u039c\u03b5\u03c4\u03b1\u03b2\u03bb\u03b7\u03c4\u03ce\u03bd:<\/b> \u0393\u03b9\u03b1 \u03c4\u03b7\u03bd \u03b5\u03c0\u03af\u03bb\u03c5\u03c3\u03b7 \u03c3\u03c5\u03bd\u03bf\u03c1\u03b9\u03b1\u03ba\u03ce\u03bd \u03c0\u03c1\u03bf\u03b2\u03bb\u03b7\u03bc\u03ac\u03c4\u03c9\u03bd.<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,4,0\"><b data-path-to-node=\"1,5,4,0\" data-index-in-node=\"0\">\u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2 \u03a0\u03c1\u03ce\u03c4\u03b7\u03c2 \u03a4\u03ac\u03be\u03b7\u03c2:<\/b> \u0398\u03b5\u03bc\u03ad\u03bb\u03b9\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b5\u03c7\u03bd\u03b9\u03ba\u03ad\u03c2 \u03b5\u03c0\u03af\u03bb\u03c5\u03c3\u03b7\u03c2.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,5,0\"><b data-path-to-node=\"1,5,5,0\" data-index-in-node=\"0\">\u03a3\u03c7\u03b5\u03b4\u03cc\u03bd \u0393\u03c1\u03b1\u03bc\u03bc\u03b9\u03ba\u03ad\u03c2 (Quasilinear) \u039c\u0394\u0395 \u03a0\u03c1\u03ce\u03c4\u03b7\u03c2 \u03a4\u03ac\u03be\u03b7\u03c2:<\/b> \u0394\u03b9\u03b1\u03c7\u03b5\u03af\u03c1\u03b9\u03c3\u03b7 \u03c0\u03b9\u03bf \u03c3\u03cd\u03bd\u03b8\u03b5\u03c4\u03c9\u03bd \u03b5\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03c9\u03bd.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,6,0\"><b data-path-to-node=\"1,5,6,0\" data-index-in-node=\"0\">\u039c\u03b7 \u0393\u03c1\u03b1\u03bc\u03bc\u03b9\u03ba\u03ad\u03c2 \u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2:<\/b> \u03a0\u03c1\u03bf\u03b7\u03b3\u03bc\u03ad\u03bd\u03b7 \u03bc\u03bf\u03bd\u03c4\u03b5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03c6\u03c5\u03c3\u03b9\u03ba\u03ce\u03bd \u03c3\u03c5\u03c3\u03c4\u03b7\u03bc\u03ac\u03c4\u03c9\u03bd.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,7,0\"><b data-path-to-node=\"1,5,7,0\" data-index-in-node=\"0\">\u03a3\u03c4\u03bf\u03b9\u03c7\u03b5\u03af\u03b1 \u03a3\u03b5\u03b9\u03c1\u03ce\u03bd Fourier:<\/b> \u039f\u03c1\u03b8\u03bf\u03b3\u03c9\u03bd\u03b9\u03ba\u03cc\u03c4\u03b7\u03c4\u03b1 \u03ba\u03b1\u03b9 \u03c0\u03b5\u03c1\u03b9\u03bf\u03b4\u03b9\u03ba\u03ad\u03c2 \u03c3\u03c5\u03bd\u03b1\u03c1\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,8,0\"><b data-path-to-node=\"1,5,8,0\" data-index-in-node=\"0\">\u0397 \u0395\u03be\u03af\u03c3\u03c9\u03c3\u03b7 \u0398\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2:<\/b> \u039c\u03bf\u03bd\u03c4\u03b5\u03bb\u03bf\u03c0\u03bf\u03af\u03b7\u03c3\u03b7 \u03b8\u03b5\u03c1\u03bc\u03b9\u03ba\u03ae\u03c2 \u03b4\u03b9\u03ac\u03c7\u03c5\u03c3\u03b7\u03c2.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,9,0\"><b data-path-to-node=\"1,5,9,0\" data-index-in-node=\"0\">\u0397 \u0395\u03be\u03af\u03c3\u03c9\u03c3\u03b7 Laplace:<\/b> \u039c\u03b5\u03bb\u03ad\u03c4\u03b7 \u03c0\u03b5\u03b4\u03af\u03c9\u03bd \u03b4\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03bf\u03cd \u03ba\u03b1\u03b9 \u03c3\u03c5\u03bd\u03b8\u03b7\u03ba\u03ce\u03bd \u03bc\u03cc\u03bd\u03b9\u03bc\u03b7\u03c2 \u03ba\u03b1\u03c4\u03ac\u03c3\u03c4\u03b1\u03c3\u03b7\u03c2.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,10,0\"><b data-path-to-node=\"1,5,10,0\" data-index-in-node=\"0\">\u0397 \u039a\u03c5\u03bc\u03b1\u03c4\u03b9\u03ba\u03ae \u0395\u03be\u03af\u03c3\u03c9\u03c3\u03b7:<\/b> \u0391\u03bd\u03ac\u03bb\u03c5\u03c3\u03b7 \u03b1\u03ba\u03bf\u03c5\u03c3\u03c4\u03b9\u03ba\u03ce\u03bd \u03ba\u03b1\u03b9 \u03b7\u03bb\u03b5\u03ba\u03c4\u03c1\u03bf\u03bc\u03b1\u03b3\u03bd\u03b7\u03c4\u03b9\u03ba\u03ce\u03bd \u03ba\u03c5\u03bc\u03ac\u03c4\u03c9\u03bd.<\/p>\n<\/li>\n<li style=\"text-align: left;\">\n<p data-path-to-node=\"1,5,11,0\"><b data-path-to-node=\"1,5,11,0\" data-index-in-node=\"0\">\u039c\u03b5\u03c4\u03b1\u03c3\u03c7\u03b7\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03bf\u03af Laplace:<\/b> \u0395\u03c0\u03af\u03bb\u03c5\u03c3\u03b7 \u039c\u0394\u0395 \u03bc\u03ad\u03c3\u03c9 \u03b1\u03bb\u03b3\u03b5\u03b2\u03c1\u03b9\u03ba\u03ce\u03bd \u03c7\u03b5\u03b9\u03c1\u03b9\u03c3\u03bc\u03ce\u03bd.<\/p>\n<\/li>\n<li>\n<p style=\"text-align: left;\" data-path-to-node=\"1,5,12,0\"><b data-path-to-node=\"1,5,12,0\" data-index-in-node=\"0\">\u039f\u03bb\u03bf\u03ba\u03bb\u03b7\u03c1\u03c9\u03c4\u03b9\u03ba\u03bf\u03af \u039c\u03b5\u03c4\u03b1\u03c3\u03c7\u03b7\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03bf\u03af:<\/b> \u03a7\u03c1\u03ae\u03c3\u03b7 \u03bc\u03b5\u03c4\u03b1\u03c3\u03c7\u03b7\u03bc\u03b1\u03c4\u03b9\u03c3\u03bc\u03ce\u03bd Fourier \u03ba\u03b1\u03b9 \u03ac\u03bb\u03bb\u03c9\u03bd \u03b3\u03b9\u03b1 \u03c3\u03cd\u03bd\u03b8\u03b5\u03c4\u03b1 \u03c0\u03b5\u03b4\u03af\u03b1.<\/p>\n<\/li>\n<\/ul>\n<p data-path-to-node=\"1,7\"><b data-path-to-node=\"1,7\" data-index-in-node=\"0\">\u039e\u03b5\u03c0\u03b5\u03c1\u03ac\u03c3\u03c4\u03b5 \u03c4\u03b9\u03c2 \u0394\u03c5\u03c3\u03ba\u03bf\u03bb\u03af\u03b5\u03c2<\/b><\/p>\n<p data-path-to-node=\"1,7\">\n<\/p><p data-path-to-node=\"1,8\">\u0391\u03c0\u03bf\u03c4\u03b5\u03bb\u03bf\u03cd\u03bd \u03bf\u03b9 \u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2 \u03b5\u03bc\u03c0\u03cc\u03b4\u03b9\u03bf \u03c0\u03bf\u03c5 \u03b5\u03af\u03c3\u03c4\u03b5 \u03ad\u03c4\u03bf\u03b9\u03bc\u03bf\u03b9 \u03bd\u03b1 \u03be\u03b5\u03c0\u03b5\u03c1\u03ac\u03c3\u03b5\u03c4\u03b5; \u0395\u03af\u03c4\u03b5 \u03b1\u03bd\u03c4\u03b9\u03bc\u03b5\u03c4\u03c9\u03c0\u03af\u03b6\u03b5\u03c4\u03b5 \u03b4\u03c5\u03c3\u03ba\u03bf\u03bb\u03af\u03b5\u03c2 \u03bc\u03b5 \u03c4\u03b9\u03c2 \u03b8\u03b5\u03c9\u03c1\u03b7\u03c4\u03b9\u03ba\u03ad\u03c2 \u03b1\u03c0\u03bf\u03b4\u03b5\u03af\u03be\u03b5\u03b9\u03c2 \u03b5\u03af\u03c4\u03b5 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03c0\u03c1\u03b1\u03ba\u03c4\u03b9\u03ba\u03ae \u03b5\u03c6\u03b1\u03c1\u03bc\u03bf\u03b3\u03ae \u03b1\u03c5\u03c4\u03ce\u03bd \u03c4\u03c9\u03bd \u03bc\u03b5\u03b8\u03cc\u03b4\u03c9\u03bd, \u03b5\u03af\u03bc\u03b1\u03b9 \u03b5\u03b4\u03ce \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c3\u03b1\u03c2 \u03b2\u03bf\u03b7\u03b8\u03ae\u03c3\u03c9 \u03bd\u03b1 \u03ba\u03b1\u03c4\u03b1\u03bd\u03bf\u03ae\u03c3\u03b5\u03c4\u03b5 \u03c0\u03bb\u03ae\u03c1\u03c9\u03c2 \u03c4\u03b7\u03bd \u03cd\u03bb\u03b7 \u03ba\u03b1\u03b9 \u03bd\u03b1 \u03c0\u03b5\u03c4\u03cd\u03c7\u03b5\u03c4\u03b5 \u03c3\u03c4\u03b9\u03c2 \u03b5\u03be\u03b5\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c3\u03b1\u03c2.<\/p>\n<p><!-- \/wp:paragraph --><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-37614a6 e-flex e-con-boxed e-con e-parent\" data-id=\"37614a6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5284c67 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"5284c67\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/toplessons.gr\/?page_id=1973\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">\u03a0\u03b1\u03c4\u03ae\u03c3\u03c4\u03b5 \u03b5\u03b4\u03ce<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2 &nbsp; &nbsp; \u039c\u03b5\u03c1\u03b9\u03ba\u03ad\u03c2 \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ad\u03c2 \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2 (\u039c\u0394\u0395) &nbsp; \u0397 \u03bc\u03b5\u03bb\u03ad\u03c4\u03b7 \u03c4\u03c9\u03bd \u039c\u03b5\u03c1\u03b9\u03ba\u03ce\u03bd \u0394\u03b9\u03b1\u03c6\u03bf\u03c1\u03b9\u03ba\u03ce\u03bd \u0395\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03c9\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03ba\u03c1\u03af\u03c3\u03b9\u03bc\u03b7\u03c2 \u03c3\u03b7\u03bc\u03b1\u03c3\u03af\u03b1\u03c2 \u03b3\u03b9\u03b1 \u03c6\u03c5\u03c3\u03b9\u03ba\u03bf\u03cd\u03c2, \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03bf\u03cd\u03c2, \u03c7\u03b7\u03bc\u03b9\u03ba\u03bf\u03cd\u03c2 \u03ba\u03b1\u03b9 \u03b3\u03b5\u03bd\u03b9\u03ba\u03cc\u03c4\u03b5\u03c1\u03b1 \u03b3\u03b9\u03b1 \u03bf\u03c0\u03bf\u03b9\u03bf\u03bd\u03b4\u03ae\u03c0\u03bf\u03c4\u03b5 \u03b5\u03bc\u03c0\u03bb\u03ad\u03ba\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7 \u03bc\u03b5\u03bb\u03ad\u03c4\u03b7 \u03c6\u03c5\u03c3\u03b9\u03ba\u03ce\u03bd \u03c6\u03b1\u03b9\u03bd\u03bf\u03bc\u03ad\u03bd\u03c9\u03bd \u03a3\u03b5 \u03b1\u03c5\u03c4\u03cc \u03c4\u03bf \u03bc\u03ac\u03b8\u03b7\u03bc\u03b1, \u03bc\u03b1\u03b8\u03b1\u03af\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c0\u03ce\u03c2 \u03bd\u03b1 \u03bb\u03cd\u03bd\u03bf\u03c5\u03bc\u03b5 \u03b5\u03be\u03b9\u03c3\u03ce\u03c3\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03c0\u03b5\u03c1\u03b9\u03b3\u03c1\u03ac\u03c6\u03bf\u03c5\u03bd \u03c6\u03c5\u03c3\u03b9\u03ba\u03ad\u03c2 \u03b4\u03b9\u03b5\u03c1\u03b3\u03b1\u03c3\u03af\u03b5\u03c2, \u03cc\u03c0\u03c9\u03c2 \u03c4\u03b7 \u03b1\u03b3\u03c9\u03b3\u03ae \u03b8\u03b5\u03c1\u03bc\u03cc\u03c4\u03b7\u03c4\u03b1\u03c2, \u03c4\u03b7 \u03b4\u03b9\u03ac\u03b4\u03bf\u03c3\u03b7 \u03ba\u03c5\u03bc\u03ac\u03c4\u03c9\u03bd \u03ba\u03b1\u03b9 \u03c4\u03b7 \u03c1\u03bf\u03ae [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-4569","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Partial Differential Equations Lessons<\/title>\n<meta name=\"description\" content=\"Personalized Partial Differential Equations Lessons | Boundary Value Problems | Fourier Transform Methods | Heat Wave Laplace Equations\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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