{"id":7481,"date":"2021-11-20T13:52:56","date_gmt":"2021-11-20T06:52:56","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=7481"},"modified":"2021-11-20T15:09:09","modified_gmt":"2021-11-20T08:09:09","slug":"vi-sao-trong-cuoc-song-hang-ngay-nguoi-ta-lai-dung-he-dem-thap-phan","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/vi-sao-trong-cuoc-song-hang-ngay-nguoi-ta-lai-dung-he-dem-thap-phan\/","title":{"rendered":"V\u00ec sao trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y ng\u01b0\u1eddi ta l\u1ea1i d\u00f9ng h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n?"},"content":{"rendered":"\n<p>S\u1ed1 t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c ra \u0111\u1eddi m\u1ed9t c\u00e1ch h\u1ebft s\u1ee9c \u201ct\u1ef1 nhi\u00ean\u201d. T\u1eeb th\u1eddi xa x\u01b0a nh\u00e2n d\u00e2n lao \u0111\u1ed9ng c\u1ea7n \u0111\u1ebfm s\u1ed1 s\u00fac v\u1eadt b\u1eaft \u0111\u01b0\u1ee3c \u201c1, 2, 3, 4,\u2026\u201d d\u1ea7n d\u1ea7n xu\u1ea5t hi\u1ec7n s\u1ed1 t\u1ef1 nhi\u00ean. Th\u1ebf nh\u01b0ng l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 g\u1ecdi t\u00ean v\u00e0 ghi l\u1ea1i t\u1eebng s\u1ed1 t\u1ef1 nhi\u00ean ri\u00eang bi\u1ec7t th\u00ec l\u1ea1i l\u00e0 v\u1ea5n \u0111\u1ec1 kh\u00f4ng t\u1ef1 nhi\u00ean ch\u00fat n\u00e0o.<\/p>\n\n\n\n<p>Khi ng\u01b0\u1eddi ta nh\u1eadn bi\u1ebft c\u00e1c s\u1ed1 \u0111\u1ebfn \u201c10\u201d v\u00e0 d\u00f9ng c\u00e1c t\u00ean g\u1ecdi v\u00e0 ghi t\u1eebng s\u1ed1 ri\u00eang bi\u1ec7t th\u00ec l\u00e0 vi\u1ec7c kh\u00f4ng kh\u00f3 l\u1eafm. Th\u1ebf nh\u01b0ng khi ng\u01b0\u1eddi ta bi\u1ebft \u0111\u1ebfm \u0111\u1ebfn s\u1ed1 \u201ctr\u0103m\u201d, \u201cng\u00e0n\u201d, \u201cv\u1ea1n\u201d th\u00ec n\u1ebfu c\u1ee9 theo c\u00e1ch c\u0169 m\u00e0 g\u1ecdi t\u00ean ch\u00fang l\u00e0 \u201cm\u1ed9t tr\u0103m c\u00e1i, m\u1ed9t ng\u00e0n c\u00e1i, m\u1ed9t v\u1ea1n c\u00e1i v\u00e0 d\u00f9ng c\u00e1c k\u00ed hi\u1ec7u ri\u00eang bi\u1ec7t \u0111\u1ec3 ghi l\u1ea1i th\u00ec h\u1ea7u nh\u01b0 tr\u1edf n\u00ean kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c. \u0110\u00e3 kh\u00f4ng \u00edt ng\u01b0\u1eddi lao t\u00e2m kh\u1ed5 t\u1ee9 t\u00ecm c\u00e1ch g\u1ecdi t\u00ean v\u00e0 t\u00ecm c\u00e1c k\u00ed hi\u1ec7u \u0111\u1ec3 ghi l\u1ea1i, th\u00ec ngay b\u1ea3n th\u00e2n h\u1ecd c\u0169ng kh\u00f4ng nh\u1edb v\u00e0 ghi \u0111\u01b0\u1ee3c ch\u00ednh x\u00e1c c\u00e1c k\u00ed hi\u1ec7u \u0111\u00f3, ch\u01b0a n\u00f3i l\u00e0 d\u00f9ng ch\u00fang trong vi\u1ec7c t\u00ednh to\u00e1n. Trong t\u00ecnh h\u00ecnh \u0111\u00f3 vi\u1ec7c t\u00ecm ra c\u00e1ch ghi v\u00e0 g\u1ecdi t\u00ean theo c\u00e1ch th\u1ee9c \u201ch\u1ec7 \u0111\u1ebfm theo c\u01a1 s\u1ed1\u201d l\u00e0 m\u1ed9t ph\u00e1t minh v\u0129 \u0111\u1ea1i.<\/p>\n\n\n\n<p>Theo ng\u00f4n ng\u1eef to\u00e1n h\u1ecdc hi\u1ec7n \u0111\u1ea1i, h\u1ec7 \u0111\u1ebfm theo c\u01a1 s\u1ed1 l\u00e0 n\u1ebfu ch\u1ecdn tr\u01b0\u1edbc m\u1ed9t s\u1ed1 t\u1ef1 nhi\u00ean p &gt; 1 v\u00e0 n\u1ebfu c\u00f3 m\u1ed9t s\u1ed1 t\u1ef1 nhi\u00ean A tho\u1ea3 m\u00e3n \u0111i\u1ec1u ki\u1ec7n pn \u2264 A \u2264 pn+1, ta c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n A d\u01b0\u1edbi d\u1ea1ng:<\/p>\n\n\n\n<p>A = a0 + a1p + a2p2 + a3pn (an \u2260 0). trong \u0111\u00f3 0 \u2264 ai \u2264 p<\/p>\n\n\n\n<p>V\u00ec p quy\u1ebft \u0111\u1ecbnh b\u01b0\u1edbc ti\u1ebfn c\u1ee7a d\u00e3y s\u1ed1 n\u00ean ng\u01b0\u1eddi ta g\u1ecdi p l\u00e0 c\u01a1 s\u1ed1 c\u1ee7a h\u1ec7 \u0111\u1ebfm. N\u1ebfu ch\u1ecdn tr\u01b0\u1edbc p s\u1ed1 t\u1ef1 nhi\u00ean v\u00e0 ghi theo th\u1ee9 t\u1ef1 t\u1eeb 0 \u0111\u1ebfn p-1, trong \u0111\u00f3 p l\u00e0 c\u01a1 s\u1ed1 c\u1ee7a h\u1ec7 \u0111\u1ebfm t\u1ef1 nhi\u00ean th\u00ec ta c\u00f3 th\u1ec3 d\u00f9ng ph\u01b0\u01a1ng ph\u00e1p \u201cghi s\u1ed1 theo v\u1ecb tr\u00ed\u201d v\u00e0 s\u1ed1 A \u0111\u00e3 cho \u1edf tr\u00ean c\u00f3 th\u1ec3 vi\u1ebft th\u00e0nh A = anan-1 \u2026a1a0, trong \u0111\u00f3 ai l\u00e0 m\u1ed9t trong p k\u00ed hi\u1ec7u \u0111\u00e3 ch\u1ecdn.<\/p>\n\n\n\n<p>Ph\u01b0\u01a1ng ph\u00e1p \u201cghi theo v\u1ecb tr\u00ed\u201d \u0111\u01b0\u1ee3c ph\u00e1t minh s\u1edbm nh\u1ea5t \u1edf Trung<\/p>\n\n\n\n<p>Qu\u1ed1c, l\u00e0 m\u1ed9t trong nh\u1eefng c\u1ed1ng hi\u1ebfn quan tr\u1ecdng c\u1ee7a c\u00e1c nh\u00e0 to\u00e1n h\u1ecdc c\u1ed5 Trung Qu\u1ed1c.<\/p>\n\n\n\n<p>C\u00e1ch m\u00f4 t\u1ea3 v\u1eeba tr\u00ecnh b\u00e0y tr\u00ean \u0111\u00e2y qu\u1ea3 th\u1ef1c kh\u00f4ng d\u1ec5 hi\u1ec3u l\u1eafm.<\/p>\n\n\n\n<p>Th\u1ebf nh\u01b0ng c\u00e1c b\u1ea1n h\u00e3y t\u01b0\u1edfng t\u01b0\u1ee3ng p \u0111\u01b0\u1ee3c ch\u1ecdn l\u00e0 10. B\u00e2y gi\u1edd ch\u00fang ta d\u00f9ng c\u00e1c con s\u1ed1 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 l\u00e0 c\u00e1c k\u00ed hi\u1ec7u c\u00e1c ch\u1eef s\u1ed1 t\u1eeb 0 \u0111\u1ebfn 10. D\u00f9ng c\u00e1c ch\u1eef s\u1ed1 n\u00e0y ta c\u00f3 th\u1ec3 ghi b\u1ea5t k\u00ec s\u1ed1 t\u1ef1 nhi\u00ean n\u00e0o theo ph\u01b0\u01a1ng ph\u00e1p \u201cghi theo v\u1ecb tr\u00ed\u201d. V\u00ed d\u1ee5 v\u1edbi s\u1ed1 347804, th\u1ef1c t\u1ebf \u0111\u00e2y ch\u00ednh l\u00e0 s\u1ed1: 4 + 0 \u00d7 10 + 8 \u00d7 102 + 7 \u00d7 103 + 4 \u00d7 104 + 3 \u00d7 105<\/p>\n\n\n\n<p>D\u1ec5 d\u00e0ng nh\u1eadn th\u1ea5y \u0111i\u1ec1u k\u00ec di\u1ec7u c\u1ee7a h\u1ec7 \u0111\u1ebfm theo c\u01a1 s\u1ed1 l\u00e0 c\u00f3 th\u1ec3 d\u00f9ng m\u1ed9t s\u1ed1 h\u1eefu h\u1ea1n c\u00e1c k\u00ed hi\u1ec7u \u0111\u1ec3 bi\u1ec3u di\u1ec5n v\u00f4 h\u1ea1n c\u00e1c s\u1ed1 l\u1edbn \u0111\u1ebfn bao nhi\u00eau c\u0169ng \u0111\u01b0\u1ee3c, c\u0169ng nh\u01b0 d\u1ec5 d\u00e0ng nh\u1eadn bi\u1ebft c\u00e1c s\u1ed1 l\u1edbn nh\u1ecf v\u00e0 r\u1ea5t ti\u1ec7n l\u1ee3i khi th\u1ef1c hi\u1ec7n c\u00e1c ph\u00e9p to\u00e1n s\u1ed1 h\u1ecdc. Vi\u1ec7c ph\u00e1t minh h\u1ec7 \u0111\u1ebfm theo c\u01a1 s\u1ed1 l\u00e0m cho nh\u1eadn th\u1ee9c c\u1ee7a lo\u00e0i ng\u01b0\u1eddi v\u1edbi c\u00e1c con s\u1ed1 \u0111\u1ea1t \u0111\u1ebfn m\u1ed9t tr\u00ecnh \u0111\u1ed9 m\u1edbi.<\/p>\n\n\n\n<p>C\u00e1c b\u1ea1n c\u0169ng d\u1ec5 d\u00e0ng nh\u1eadn th\u1ea5y c\u00f3 th\u1ec3 d\u00f9ng b\u1ea5t k\u00ec m\u1ed9t s\u1ed1 t\u1ef1 nhi\u00ean p b\u1ea5t k\u00ec \u0111\u1ec3 l\u00e0m c\u01a1 s\u1ed1 cho m\u1ed9t h\u1ec7 \u0111\u1ebfm nh\u01b0ng th\u00f4ng th\u01b0\u1eddng trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y ng\u01b0\u1eddi ta v\u1eabn hay d\u00f9ng \u201ch\u1ec7 \u0111\u1ebfm c\u01a1 s\u1ed1 10\u201d hay \u201ch\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n\u201d. C\u00e1c b\u1ea1n c\u0169ng d\u1ec5 d\u00e0ng nh\u1eadn th\u1ea5y l\u00e0 ng\u01b0\u1eddi x\u01b0a ch\u1eafc \u0111\u00e3 kh\u00f4ng d\u00f9ng c\u00e1ch m\u00f4 t\u1ea3 tr\u1eebu t\u01b0\u1ee3ng nh\u01b0 \u0111\u00e3 tr\u00ecnh b\u00e0y \u1edf tr\u00ean \u0111\u1ec3 \u0111\u1ecbnh ngh\u0129a h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n. Th\u1ebf t\u1ea1i sao h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n l\u1ea1i \u0111\u01b0\u1ee3c to\u00e0n th\u1ec3 lo\u00e0i ng\u01b0\u1eddi ch\u1ea5p nh\u1eadn ngay t\u1eeb \u0111\u1ea7u?<\/p>\n\n\n\n<p>Th\u1ef1c ra \u0111i\u1ec1u n\u00e0y c\u00f3 l\u00ed do h\u1ebft s\u1ee9c \u0111\u01a1n gi\u1ea3n, \u0111\u00f3 l\u00e0 do hai tay c\u1ee7a ch\u00fang ta c\u00f3 10 ng\u00f3n.<\/p>\n\n\n\n<p>Trong th\u1eddi \u0111\u1ea1i xa x\u01b0a, tr\u00ecnh \u0111\u1ed9 s\u1ea3n xu\u1ea5t v\u1ed1n r\u1ea5t th\u1ea5p, ch\u1ec9 c\u1ea7n nh\u1eefng s\u1ed1 \u0111\u1ebfm \u0111\u01a1n gi\u1ea3n, 10 ng\u00f3n tay t\u1ef1 nhi\u00ean tr\u1edf th\u00e0nh m\u1ed9t \u201cm\u00e1y t\u00ednh\u201d s\u1edbm nh\u1ea5t. Trong s\u00e1ch x\u01b0a t\u1eebng c\u00f3 th\u00e0nh ng\u1eef \u201c\u0111\u1ebfm tr\u00ean \u0111\u1ea7u ng\u00f3n tay\u201d (co ng\u00f3n tay \u0111\u1ec3 \u0111\u1ebfm) n\u00ean c\u00f3 th\u1ec3 th\u1ea5y \u201cco ng\u00f3n tay\u201d \u0111\u1ebfm s\u1ed1 l\u00e0 c\u00e1ch \u0111\u1ebfm ra \u0111\u1eddi s\u1edbm nh\u1ea5t. Th\u00f3i quen n\u00e0y v\u1eabn c\u00f2n v\u1ebft t\u00edch trong \u0111\u1eddi s\u1ed1ng x\u00e3 h\u1ed9i ng\u00e0y nay: C\u00e1c em nh\u1ecf \u1edf c\u00e1c v\u01b0\u1eddn tr\u1ebb v\u1eabn th\u01b0\u1eddng d\u00f9ng ng\u00f3n tay \u0111\u1ec3 \u0111\u1ebfm s\u1ed1; nh\u1eefng ng\u01b0\u1eddi l\u1edbn khi n\u00f3i chuy\u1ec7n v\u1edbi nhau v\u1eabn d\u00f9ng c\u00e1c ng\u00f3n tay \u0111\u1ec3 ra d\u1ea5u v\u1ec1 c\u00e1c con s\u1ed1 n\u00e0o \u0111\u00f3. Khi tr\u00ecnh \u0111\u1ed9 s\u1ea3n xu\u1ea5t \u0111\u1ea1t \u0111\u1ebfn tr\u00ecnh \u0111\u1ed9 cao, th\u00e0nh t\u1ef1u lao \u0111\u1ed9ng \u0111\u00e3 \u0111\u1ea1t \u0111\u1ebfn s\u1ed1 l\u1edbn v\u00e0 v\u01b0\u1ee3t qua con s\u1ed1 10. B\u1ea5y gi\u1edd vi\u1ec7c d\u00f9ng \u201cng\u00f3n tay \u0111\u1ebfm s\u1ed1\u201d \u0111\u00e3 kh\u00f4ng c\u00f2n th\u00edch h\u1ee3p n\u1eefa. Th\u1ebf nh\u01b0ng con ng\u01b0\u1eddi v\u1eabn ch\u01b0a t\u1eeb b\u1ecf th\u00f3i quen d\u00f9ng ng\u00f3n tay \u0111\u1ec3 \u0111\u1ebfm s\u1ed1 v\u00e0 th\u01b0\u1eddng thu\u1eadn tay d\u00f9ng ng\u00f3n tay \u0111\u1ec3 l\u00e0m \u201cm\u00e1y t\u00ednh\u201d v\u1edbi vi\u1ec7c c\u00f3 th\u1ec3 d\u00f9ng th\u00eam c\u00f4ng c\u1ee5 \u0111\u1ec3 tr\u1ee3 gi\u00fap, v\u00ed d\u1ee5 c\u00f3 th\u1ec3 d\u00f9ng nh\u1eefng vi\u00ean \u0111\u00e1, c\u00e0nh c\u00e2y thay th\u1ebf khi c\u00e1c ng\u00f3n tay \u0111\u00e3 s\u1eed d\u1ee5ng h\u1ebft \u0111\u1ec3 c\u00f3 th\u1ec3 d\u00f9ng l\u1ea1i c\u00e1c ng\u00f3n tay \u0111\u1ec3 \u0111\u1ebfm. Sau nhi\u1ec1u l\u1ea7n l\u1eb7p \u0111i, l\u1eb7p l\u1ea1i c\u00e1ch t\u00ednh to\u00e1n, t\u1ed5ng k\u1ebft kinh nghi\u1ec7m, lo\u00e0i ng\u01b0\u1eddi \u0111\u00e3 ph\u00e1t minh h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n.<\/p>\n\n\n\n<p>Nh\u01b0 v\u1eady c\u00f3 th\u1ec3 th\u1ea5y t\u1ed5 ti\u00ean c\u1ee7a con ng\u01b0\u1eddi, do nhu c\u1ea7u c\u1ee7a \u0111\u1eddi s\u1ed1ng, s\u1ea3n xu\u1ea5t, xu\u1ea5t ph\u00e1t t\u1eeb \u0111i\u1ec1u ki\u1ec7n c\u1ee7a b\u1ea3n th\u00e2n m\u00ecnh, kh\u00f4ng ng\u1eebng t\u00edch lu\u1ef9 kinh nghi\u1ec7m, t\u1ed5ng k\u1ebft kinh nghi\u1ec7m m\u00e0 \u0111\u00e3 ph\u00e1t minh h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n. Do h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n c\u00f3 m\u1ed1i li\u00ean h\u1ec7 t\u1ef1 nhi\u00ean v\u1edbi cu\u1ed9c s\u1ed1ng, n\u00ean \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e3 h\u1ed9i lo\u00e0i ng\u01b0\u1eddi ti\u1ebfp thu, truy\u1ec1n b\u00e1 v\u00e0 tr\u1edf th\u00e0nh m\u1ed9t b\u1ed9 ph\u1eadn kh\u00f4ng th\u1ec3 t\u00e1ch r\u1eddi v\u1edbi cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta.<\/p>\n\n\n\n<p>Trong l\u1ecbch s\u1eed x\u00e3 h\u1ed9i lo\u00e0i ng\u01b0\u1eddi, ng\u01b0\u1eddi ta c\u00f2n th\u1ea5y c\u00f3 nhi\u1ec1u h\u1ec7 \u0111\u1ebfm kh\u00e1c. V\u00ed d\u1ee5 khi n\u00f3i \u0111\u1ebfn vi\u1ec7c \u0111o \u0111\u1ed9, ng\u01b0\u1eddi ta hay d\u00f9ng \u201ch\u1ec7 \u0111\u1ebfm c\u01a1 s\u1ed1 60\u201d; m\u1ed9t \u0111\u1ed9 c\u00f3 60 ph\u00fat, m\u1ed9t ph\u00fat c\u00f3 60 gi\u00e2y; Trong h\u1ec7 th\u1ed1ng c\u00e2n \u0111o c\u0169 \u1edf Trung Qu\u1ed1c, ng\u01b0\u1eddi ta d\u00f9ng \u0111\u01a1n v\u1ecb m\u1ed9t c\u00e2n c\u00f3 16 l\u1ea1ng &#8211; \u0111\u00f3 l\u00e0 \u201ch\u1ec7 \u0111\u1ebfm c\u01a1 s\u1ed1 16\u201d; trong b\u00e1t qu\u00e1i d\u00f9ng c\u1ea3 hai h\u1ec7 \u0111\u1ebfm \u201cnh\u1ecb ph\u00e2n\u201d v\u00e0 \u201ch\u1ec7 \u0111\u1ebfm c\u01a1 s\u1ed1 8\u201d. \u1ede m\u1ed9t s\u1ed1 n\u01b0\u1edbc c\u00f2n c\u00f3 \u201ch\u1ec7 \u0111\u1ebfm c\u01a1 s\u1ed1 12\u201d: c\u1ee9 12 v\u1eadt ph\u1ea9m g\u1ecdi l\u00e0 m\u1ed9t t\u00e1, 12 t\u00e1 g\u1ecdi l\u00e0 m\u1ed9t \u201cr\u00e1\u201d. \u0110\u01b0\u01a1ng nhi\u00ean l\u00e0 c\u00e1c h\u1ec7 \u0111\u1ebfm v\u1eeba k\u1ec3 ch\u1ec9 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u1ed9t s\u1ed1 l\u0129nh v\u1ef1c h\u1eb9p v\u00e0 h\u1ea1n ch\u1ebf (v\u1ec1 kh\u00f4ng gian, \u0111\u1ecba \u0111i\u1ec3m), kh\u00f4ng \u0111\u01b0\u1ee3c ho\u00e0n thi\u1ec7n v\u00e0 r\u1ed9ng r\u00e3i nh\u01b0 h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n.<\/p>\n\n\n\n<p>Ng\u00e0y nay lo\u00e0i ng\u01b0\u1eddi \u0111\u00e3 b\u01b0\u1edbc v\u00e0o th\u1eddi \u0111\u1ea1i c\u1ee7a c\u00e1c m\u00e1y t\u00ednh \u0111i\u1ec7n t\u1eed, th\u1eddi \u0111\u1ea1i c\u1ee7a c\u00f4ng ngh\u1ec7 th\u00f4ng tin. \u0110i\u1ec1u d\u1ec5 c\u1ea3m nh\u1eadn l\u00e0 m\u00e1y t\u00ednh \u0111i\u1ec7n t\u1eed kh\u00f4ng c\u00f3 m\u1ed1i li\u00ean h\u1ec7 t\u1ef1 nhi\u00ean v\u1edbi h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n nh\u01b0 \u1edf con ng\u01b0\u1eddi v\u1edbi h\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n, m\u00e1y t\u00ednh \u0111i\u1ec7n t\u1eed l\u1ea1i c\u00f3 m\u1ed1i li\u00ean h\u1ec7 t\u1ef1 nhi\u00ean v\u1edbi h\u1ec7 \u0111\u1ebfm c\u01a1 s\u1ed1 hai hay h\u1ec7 \u0111\u1ebfm nh\u1ecb ph\u00e2n.<\/p>\n\n\n\n<p>T\u1eeb kho\u00e1: H\u1ec7 \u0111\u1ebfm th\u1eadp ph\u00e2n.<\/p>\n\n\n\n<p><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>S\u1ed1 t\u1ef1 nhi\u00ean \u0111\u01b0\u1ee3c ra \u0111\u1eddi m\u1ed9t c\u00e1ch h\u1ebft s\u1ee9c \u201ct\u1ef1 nhi\u00ean\u201d. T\u1eeb th\u1eddi xa x\u01b0a nh\u00e2n d\u00e2n lao \u0111\u1ed9ng c\u1ea7n \u0111\u1ebfm s\u1ed1 s\u00fac v\u1eadt b\u1eaft \u0111\u01b0\u1ee3c \u201c1, 2, 3, 4,\u2026\u201d d\u1ea7n d\u1ea7n xu\u1ea5t hi\u1ec7n s\u1ed1 t\u1ef1 nhi\u00ean. Th\u1ebf nh\u01b0ng l\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 g\u1ecdi t\u00ean v\u00e0 ghi l\u1ea1i t\u1eebng s\u1ed1 t\u1ef1 nhi\u00ean ri\u00eang bi\u1ec7t [&hellip;]<\/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":[15,9],"tags":[],"class_list":["post-7481","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-toan-hoc"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7481","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=7481"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/7481\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=7481"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=7481"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=7481"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}