Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
To\u00e1n l\u1edbp 6: S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a m\u1ed9t t\u1eadp h\u1ee3p \u2013 t\u1eadp h\u1ee3p con l\u00e0 m\u1ed9t trong nh\u1eefng d\u1ea1ng l\u00fd thuy\u1ebft v\u00e0 b\u00e0i t\u1eadp g\u00e2y nh\u1ea7m l\u1eabn ki\u1ebfn th\u1ee9c c\u1ee7a c\u00e1c b\u00e9. H\u00e3y t\u00ecm hi\u1ec3u v\u00e0 ph\u00e2n bi\u1ec7t c\u00e1c ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft v\u1ec1 t\u1eadp h\u1ee3p. C\u0169ng nh\u01b0 gi\u1ea3i b\u00e0i t\u1eadp v\u1ec1 s\u1ed1 ph\u1ea7n t\u1eed v\u00e0 t\u1eadp h\u1ee3p con.<\/p>\n\n\n\n
S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a m\u1ed9t t\u1eadp h\u1ee3p<\/p>\n\n\n\n
\u0110\u1ecbnh ngh\u0129a<\/p>\n\n\n\n
S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a m\u1ed9t t\u1eadp h\u1ee3p, t\u1eadp h\u1ee3p con c\u00f3 th\u1ec3 l\u00e0 bao nhi\u00eau? Theo l\u00fd thuy\u1ebft, ta c\u00f3: M\u1ed9t t\u1eadp h\u1ee3p c\u00f3 th\u1ec3 c\u00f3 m\u1ed9t ho\u1eb7c nhi\u1ec1u ph\u1ea7n t\u1eed. C\u00f3 th\u1ec3 c\u00f3 v\u00f4 s\u1ed1 ph\u1ea7n t\u1eed ho\u1eb7c c\u0169ng c\u00f3 th\u1ec3 kh\u00f4ng c\u00f3 ph\u1ea7n t\u1eed n\u00e0o.<\/p>\n\n\n\n
T\u1eadp h\u1ee3p kh\u00f4ng c\u00f3 ph\u1ea7n t\u1eed n\u00e0o \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u1eadp h\u1ee3p r\u1ed7ng.<\/p>\n\n\n\n
K\u00fd hi\u1ec7u<\/p>\n\n\n\n
V\u1ec1 k\u00fd hi\u1ec7u ph\u1ea7n t\u1eed v\u00e0 t\u1eadp h\u1ee3p c\u1ee7a ph\u1ea7n t\u1eed, ph\u1ee5 huynh v\u00e0 c\u00e1c b\u00e9 c\u00f3 th\u1ec3 xem l\u1ea1i chi ti\u1ebft h\u01a1n t\u1ea1i H\u1ecdc gi\u1ecfi to\u00e1n l\u1edbp 6 : T\u1eadp h\u1ee3p v\u00e0 T\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean. Vietlearn c\u00f9ng tr\u1ebb t\u00ecm hi\u1ec3u s\u1ed1 h\u1ecdc l\u1edbp 6<\/p>\n\n\n\n
T\u00ean t\u1eadp h\u1ee3p \u0111\u01b0\u1ee3c vi\u1ebft \u0111\u1ea1i di\u1ec7n b\u1eb1ng c\u00e1c ch\u1eef c\u00e1i in hoa: A, B, C, D, \u2026<\/p>\n\n\n\n
C\u00f3 2 c\u00e1ch vi\u1ebft t\u1eadp h\u1ee3p:<\/p>\n\n\n\n
Li\u1ec7t k\u00ea c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p<\/p>\n\n\n\n
V\u00ed d\u1ee5: H = t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean nh\u1ecf h\u01a1n 10<\/p>\n\n\n\n
H = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 0}<\/p>\n\n\n\n
Ch\u1ec9 ra c\u00e1c t\u00ednh ch\u1ea5t \u0111\u1eb7c tr\u01b0ng c\u1ee7a t\u1eadp h\u1ee3p<\/p>\n\n\n\n
V\u00ed d\u1ee5: C = t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 t\u1ef1 nhi\u00ean l\u1edbn h\u01a1n 12, nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng 200<\/p>\n\n\n\n
C = {x \u20ac \u2115\u250212< x \u2264 200}<\/p>\n\n\n\n
Ngo\u00e0i ra, th\u1ec3 hi\u1ec7n t\u1eadp h\u1ee3p c\u00f2n \u0111\u01b0\u1ee3c minh h\u1ecda b\u1eb1ng BI\u1ec2U \u0110\u1ed2 VEN<\/p>\n\n\n\n
T\u1eadp h\u1ee3p r\u1ed7ng \u0111\u01b0\u1ee3c k\u00fd hi\u1ec7u l\u00e0 \u2205<\/p>\n\n\n\n
V\u00ed d\u1ee5: A= {x \u20ac \u2115\u2502x + 12 = 5}<\/p>\n\n\n\n
A={\u2205}<\/p>\n\n\n\n
K\u00fd hi\u1ec7u s\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a 1 t\u1eadp h\u1ee3p<\/p>\n\n\n\n
T\u1eadp h\u1ee3p con<\/p>\n\n\n\n
\u0110\u1ecbnh ngh\u0129a<\/p>\n\n\n\n
N\u1ebfu c\u00e1c ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p A \u0111\u1ec1u thu\u1ed9c t\u1eadp h\u1ee3p B v\u00e0 ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p B c\u00f3 ch\u1ee9a t\u1ea5t c\u1ea3 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p A. Ta n\u00f3i: A l\u00e0 t\u1eadp h\u1ee3p con c\u1ee7a B<\/p>\n\n\n\n
K\u00fd hi\u1ec7u: A \u2e26 B ho\u1eb7c B \u2e27 A<\/p>\n\n\n\n
H\u1ecdc gi\u1ecfi to\u00e1n l\u1edbp 6 : T\u1eadp h\u1ee3p \u2013 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p<\/p><\/blockquote>\n\n\n\n
Ch\u00fa \u00fd<\/p>\n\n\n\n
Hai t\u1eadp h\u1ee3p b\u1eb1ng nhau \u0111\u01b0\u1ee3c k\u00fd hi\u1ec7u l\u00e0 A = B. Ta n\u00f3i: t\u1eadp h\u1ee3p A b\u1eb1ng t\u1eadp h\u1ee3p B.<\/p>\n\n\n\n
Hai t\u1eadp h\u1ee3p b\u1eb1ng nhau khi m\u1ecdi ph\u1ea7n t\u1eed c\u1ee7a A \u0111\u1ec1u l\u00e0 ph\u1ea7n t\u1eed c\u1ee7a B v\u00e0 ng\u01b0\u1ee3c l\u1ea1i. M\u1ecdi ph\u1ea7n t\u1eed c\u1ee7a B \u0111\u1ec1u l\u00e0 ph\u1ea7n t\u1eed c\u1ee7a t\u1eadp h\u1ee3p A<\/p>\n\n\n\n
t\u1eadp h\u1ee3p con ph\u1ea7n t\u1eed c\u1ee7a 1 t\u1eadp h\u1ee3p<\/p>\n\n\n\n
Gi\u1ea3i b\u00e0i t\u1eadp s\u00e1ch gi\u00e1o khoa v\u1ec1 s\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a m\u1ed9t t\u1eadp h\u1ee3p. T\u1eadp h\u1ee3p con<\/p>\n\n\n\n
B\u00e0i 16, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 16, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 17, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 17, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 18, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 18, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 19, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 19, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 20, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
B\u00e0i 20, trang 13. S\u00e1ch gi\u00e1o khoa to\u00e1n 6, t\u1eadp 1<\/p>\n\n\n\n
Gi\u00fap con chinh ph\u1ee5c s\u1ed1 h\u1ecdc l\u1edbp 6<\/p>\n\n\n\n
L\u1edbp 6 l\u00e0 kho\u1ea3ng th\u1eddi gian chuy\u1ec3n c\u1ea5p t\u1eeb \u201ctr\u1ebb con\u201d sang \u201cng\u01b0\u1eddi l\u1edbn\u201d c\u1ee7a tr\u1ebb. \u1ede th\u1eddi \u0111i\u1ec3m n\u00e0y, kh\u00f4ng nh\u1eefng tr\u1ebb c\u00f3 nhi\u1ec1u thay \u0111\u1ed5i v\u1ec1 sinh l\u00fd v\u00ed d\u1ee5 nh\u01b0 qu\u00e1 tr\u00ecnh d\u1ea1y th\u00ec. Tr\u1ebb c\u00f2n xu\u1ea5t hi\u1ec7n thay \u0111\u1ed5i v\u1ec1 t\u00e2m l\u00fd, t\u00ecnh c\u1ea3m. C\u00e1i t\u00f4i c\u1ee7a tr\u1ebb trong kho\u1ea3ng th\u1eddi gian n\u00e0y \u0111ang t\u1eeb t\u1eeb \u0111\u1ecbnh h\u00ecnh. V\u00e0 tr\u1ebb b\u1eaft \u0111\u1ea7u x\u00e1c l\u1eadp v\u1ecb tr\u00ed c\u1ee7a m\u00ecnh trong \u0111\u1eddi s\u1ed1ng x\u00e3 h\u1ed9i. V\u1edbi nh\u1eefng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 v\u1ec1 t\u00e2m sinh l\u00fd. L\u1edbp 6 c\u00f2n \u0111\u01b0\u1ee3c xem l\u00e0 \u0111o\u1ea1n \u0111\u01b0\u1eddng \u0111\u1ec3 tr\u1ebb chu\u1ea9n b\u1ecb. Gi\u00e1o d\u1ee5c tr\u1ebb t\u1ed1t trong th\u1eddi \u0111i\u1ec3m n\u00e0y s\u1ebd l\u00e0 b\u01b0\u1edbc \u0111\u1ec7m tuy\u1ec7t v\u1eddi \u0111\u1ec3 tr\u1ebb c\u00f3 c\u01a1 h\u00f4i t\u0103ng t\u1ed1c trong t\u01b0\u01a1ng lai. M\u1eddi ba m\u1eb9 v\u00e0 c\u00e1c con t\u00ecm hi\u1ec3u th\u00eam v\u1ec1 \u0111\u1ed9 tu\u1ed5i n\u00e0y t\u1ea1i b\u00e0i vi\u1ebft H\u1ecdc t\u1ed1t t\u1eeb l\u1edbp 6 \u2013 B\u01b0\u1edbc \u0111\u1ec7m \u0111\u1ec3 tr\u1ebb l\u1ea5y \u0111\u00e0 ch\u1ea1y t\u1edbi t\u01b0\u01a1ng lai nh\u00e9!<\/p>\n\n\n\n
L\u1eddi k\u1ebft<\/p>\n\n\n\n
C\u00f9ng v\u1edbi nh\u1eefng s\u1ef1 thay \u0111\u1ed5i l\u1edbn khi chuy\u1ec3n sang m\u1ed9t c\u1ea5p h\u1ecdc m\u1edbi. Con c\u00f2n c\u1ea7n \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng kh\u00f3 kh\u0103n trong c\u00e1c m\u00f4n h\u1ecdc \u1edf tr\u01b0\u1eddng. Vietlearn mong r\u1eb1ng b\u00e0i vi\u1ebft n\u00e0y c\u00f3 th\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c con trong vi\u1ec7c \u00f4n luy\u1ec7n v\u00e0 r\u00e8n c\u00e1c k\u1ef9 n\u0103ng<\/a> l\u00e0m b\u00e0i t\u1eadp. Ch\u00fac c\u00e1c c<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn To\u00e1n l\u1edbp 6: S\u1ed1 ph\u1ea7n t\u1eed c\u1ee7a m\u1ed9t t\u1eadp h\u1ee3p \u2013 t\u1eadp h\u1ee3p con l\u00e0 m\u1ed9t trong nh\u1eefng d\u1ea1ng l\u00fd thuy\u1ebft v\u00e0 b\u00e0i t\u1eadp g\u00e2y nh\u1ea7m l\u1eabn ki\u1ebfn th\u1ee9c c\u1ee7a c\u00e1c b\u00e9. H\u00e3y t\u00ecm hi\u1ec3u v\u00e0 ph\u00e2n bi\u1ec7t c\u00e1c ki\u1ebfn th\u1ee9c l\u00fd thuy\u1ebft v\u1ec1 t\u1eadp h\u1ee3p. C\u0169ng nh\u01b0 gi\u1ea3i […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[9,4],"tags":[],"class_list":["post-2493","post","type-post","status-publish","format-standard","hentry","category-toan-hoc","category-trung-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2493","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=2493"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2493\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2493"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2493"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2493"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}