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{"id":3638,"date":"2016-06-07T11:12:48","date_gmt":"2016-06-07T04:12:48","guid":{"rendered":"https:\/\/onthitot.com\/?p=3638"},"modified":"2016-06-07T11:12:48","modified_gmt":"2016-06-07T04:12:48","slug":"video-on-thi-thpt-quoc-mon-toan-ve-so-phuc","status":"publish","type":"post","link":"https:\/\/onthitot.com\/video-on-thi-thpt-quoc-mon-toan-ve-so-phuc\/","title":{"rendered":"Video \u00f4n thi THPT Qu\u1ed1c m\u00f4n To\u00e1n v\u1ec1 S\u1ed1 Ph\u1ee9c"},"content":{"rendered":"

\u0110\u1ec3 gi\u00fap c\u00e1c b\u1ea1n h\u1ecdc sinh \u00f4n thi THPT Qu\u1ed1c Gia m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng h\u01a1n \u0111\u1ec3 chu\u1ea9n b\u1ecb cho k\u00ec thi s\u1eafp t\u1edbi, Th\u1ea7y L\u1ea1i Ti\u1ebfn Minh s\u1ebd chia s\u1ebb cho c\u00e1c em b\u00e0i gi\u1ea3ng m\u00f4n To\u00e1n chuy\u1ec1n \u0111\u1ec1 v\u1ec1 s\u1ed1 ph\u1ee9c.<\/p>\n

$\"on-thi-thpt-quoc-gia-mon-toan-ve-so-phuc-thay-Lai-Tien-Minh\"$ <\/p>\n

Qua b\u00e0i gi\u1ea3ng n\u00e0y c\u1ee7a Th\u1ea7y L\u1ea1i Ti\u1ebfn Minh, c\u00e1c b\u1ea1n s\u1ebd \u0111\u01b0\u1ee3c h\u1ecdc h\u1ec7 th\u1ed1ng l\u1ea1i m\u1ed9t s\u1ed1 ki\u1ebfn th\u1ee9c v\u00e0 ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n li\u00ean quan \u0111\u1ebfn s\u1ed1 ph\u1ee9c. M\u1eddi c\u00e1c em theo d\u00f5i.<\/p>\n

<\/iframe><\/p>\n Kh\u00e1i ni\u1ec7m s\u1ed1 ph\u1ee9c:<\/b><\/p>\n<ul>\n<li>L\u00e0 bi\u1ec3u th\u1ee9c c\u00f3 d\u1ea1ng a + bi, trong \u0111\u00f3 a, b l\u00e0 nh\u1eefng s\u1ed1 th\u1ef1c v\u00e0 s\u1ed1 i tho\u1ea3 i<\/span>2<\/span><\/span><\/span><\/span><\/span><\/span><\/span> = \u20131.<\/li>\n<li>K\u00ed hi\u1ec7u l\u00e0 z = a + bi v\u1edbi a l\u00e0 ph\u1ea7n th\u1ef1c, b l\u00e0 ph\u1ea7n \u1ea3o, i l\u00e0 \u0111\u01a1n v\u1ecb \u1ea3o.<\/li>\n<li>T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 ph\u1ee9c k\u00ed hi\u1ec7u l\u00e0 = {a + bi\/ a, b \u2208 R<\/b> v\u00e0 i<\/span>2<\/span><\/span><\/span><\/span><\/span><\/span><\/span>= \u20131}. Ta c\u00f3 R<\/span>\u2282<\/span>C<\/span><\/span><\/span><\/span>.<\/li>\n<li>S\u1ed1 ph\u1ee9c c\u00f3 ph\u1ea7n \u1ea3o b\u1eb1ng 0 l\u00e0 m\u1ed9t s\u1ed1 th\u1ef1c: z = a + 0.i = a<\/span>\u2208<\/span>R<\/span>\u2282<\/span>C<\/span><\/span><\/span><\/span><\/li>\n<li>S\u1ed1 ph\u1ee9c c\u00f3 ph\u1ea7n th\u1ef1c b\u1eb1ng 0 l\u00e0 m\u1ed9t s\u1ed1 \u1ea3o: z = 0.a + bi = bi. \u0110\u1eb7c bi\u1ec7t i = 0 + 1.<\/li>\n<li>S\u1ed1 0 = 0 + 0.i v\u1eeba l\u00e0 s\u1ed1 th\u1ef1c v\u1eeba l\u00e0 s\u1ed1 \u1ea3o.<\/li>\n<\/ul>\n2. S\u1ed1 ph\u1ee9c b\u1eb1ng nhau:<\/b><\/p>\n<ul>\n<li>Cho hai s\u1ed1 ph\u1ee9c z = a + bi v\u00e0 z\u2019 = a\u2019 + b\u2019i. Ta c\u00f3 z = z\u00a2 \u2194 {<\/span>a<\/span>=<\/span>a<\/span>\u2032<\/span><\/span><\/span><\/span>b<\/span>=<\/span>b<\/span>\u2032<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/li>\n<\/ul>\nVD:<\/b> T\u00ecm c\u00e1c s\u1ed1 th\u1ef1c x, y bi\u1ebft: (2x \u2013 3) \u2013 (3y + 1) = (2y + 1) + (3x \u2013 7)i (1) \n(1) \u2194 {<\/span>2<\/span>x<\/span>\u2212<\/span>3<\/span>=<\/span>2<\/span>y<\/span>+<\/span>1<\/span><\/span><\/span>\u2212<\/span>3<\/span>y<\/span>\u2212<\/span>1<\/span>=<\/span>3<\/span>x<\/span>\u2212<\/span>7<\/span><\/span><\/span><\/span><\/span><\/span>\u21d4<\/span>{<\/span>x<\/span>\u2212<\/span>y<\/span>=<\/span>2<\/span><\/span><\/span>x<\/span>+<\/span>y<\/span>=<\/span>2<\/span><\/span><\/span><\/span><\/span><\/span>\u21d4<\/span>{<\/span>x<\/span>=<\/span>2<\/span><\/span><\/span>y<\/span>=<\/span>0<\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/span><\/p>\n3. Bi\u1ec3u di\u1ec5n h\u00ecnh h\u1ecdc c\u1ee7a s\u1ed1 ph\u1ee9c:<\/b><\/p>\n<ul>\n<li>M\u1ed7i s\u1ed1 ph\u1ee9c z = a + bi \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi c\u1eb7p s\u1ed1 th\u1ef1c (a; b).<\/li>\n<li>Tr\u00ean m\u1eb7t ph\u1eb3ng Oxy, m\u1ed7i \u0111i\u1ec3m M(a; b) \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1edfi m\u1ed9t s\u1ed1 ph\u1ee9c v\u00e0 ng\u01b0\u1ee3c l\u1ea1i.<\/li>\n<li>M\u1eb7t ph\u1eb3ng Oxy bi\u1ec3u di\u1ec5n s\u1ed1 ph\u1ee9c \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 m\u1eb7t ph\u1eb3ng ph\u1ee9c. G\u1ed1c t\u1ecda \u0111\u1ed9 O bi\u1ec3u di\u1ec5n s\u1ed1 0, tr\u1ee5c ho\u00e0nh Ox bi\u1ec3u di\u1ec5n s\u1ed1 th\u1ef1c, tr\u1ee5c tung Oy bi\u1ec3u di\u1ec5n s\u1ed1 \u1ea3o.<\/li>\n<\/ul>\nVD: <\/b>C\u00e1c \u0111i\u1ec3m A, B, C, D bi\u1ec3u di\u1ec5n c\u00e1c s\u1ed1 ph\u1ee9c l\u00e0: \nz<\/span>A<\/span><\/span><\/span><\/span>=<\/span>1<\/span>+<\/span>4<\/span>i<\/span>;<\/span><\/span>z<\/span>B<\/span><\/span><\/span><\/span>=<\/span>\u2212<\/span>3<\/span>+<\/span>0<\/span>i<\/span>;<\/span><\/span><\/span>z<\/span>C<\/span><\/span><\/span><\/span>=<\/span>0<\/span>\u2212<\/span>2<\/span>i<\/span>;<\/span><\/span><\/span>z<\/span>D<\/span><\/span><\/span><\/span>=<\/span>4<\/span>\u2212<\/span>i<\/span>.<\/span><\/span><\/span><\/span><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":"\u0110\u1ec3 gi\u00fap c\u00e1c b\u1ea1n h\u1ecdc sinh \u00f4n thi THPT Qu\u1ed1c Gia m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng h\u01a1n \u0111\u1ec3 chu\u1ea9n b\u1ecb cho k\u00ec thi s\u1eafp t\u1edbi, Th\u1ea7y L\u1ea1i Ti\u1ebfn Minh s\u1ebd chia… <\/p>\n","protected":false},"author":1,"featured_media":3639,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49,75],"tags":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts\/3638"}],"collection":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/comments?post=3638"}],"version-history":[{"count":0,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts\/3638\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/media\/3639"}],"wp:attachment":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/media?parent=3638"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/categories?post=3638"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/tags?post=3638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}