Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
Trong cu\u1ed9c s\u1ed1ng, ch\u00fang ta th\u01b0\u1eddng d\u00f9ng nhi\u1ec1u \u0111\u1ebfn l\u1ef1c. L\u1ef1c k\u00e9o, l\u1ef1c \u0111\u1ea9y, l\u1ef1c h\u00fat,\u2026 Tuy nhi\u00ean, ch\u00fang ta l\u1ea1i kh\u00f4ng h\u1ec1 bi\u1ebft \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng chi\u1ec1u \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c n\u1ebfu kh\u00f4ng ph\u00e2n t\u00edch. C\u00f3 c\u00e1ch n\u00e0o \u0111\u1ec3 ch\u00fang ta x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y hay kh\u00f4ng? \u0110\u00e2y ch\u00ednh l\u00e0 m\u1ed9t trong nh\u1eefng th\u1eafc m\u1eafc \u0111\u01b0\u1ee3c r\u1ea5t nhi\u1ec1u c\u00e1c em h\u1ecdc sinh<\/a> l\u1edbp 8 \u0111\u1eb7t ra. B\u00e0i h\u1ecdc bi\u1ec3u di\u1ec5n l\u1ef1c, c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd 8 s\u1ebd gi\u00fap c\u00e1c em gi\u1ea3i \u0111\u00e1p. B\u00e0i vi\u1ebft ng\u00e0y h\u00f4m nay, ch\u00fang ta h\u00e3y c\u00f9ng nhau t\u00ecm hi\u1ec3u v\u00e0 gi\u1ea3i \u0111\u00e1p \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf nh\u00e9!<\/p>\n\n\n\n V\u00ed d\u1ee5 b\u00e0i t\u1eadp v\u1ec1 l\u1ef1c<\/p>\n\n\n\n L\u1ef1c l\u00e0 g\u00ec?<\/p>\n\n\n\n Tr\u01b0\u1edbc khi \u0111\u1ebfn v\u1edbi c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c ch\u00fang ta c\u1ea7n ph\u1ea3i c\u00f3 ki\u1ebfn th\u1ee9c chung v\u1ec1 l\u1ef1c l\u00e0 g\u00ec. L\u1ef1c \u0111\u01b0\u1ee3c gi\u1ea3i th\u00edch v\u1edbi \u0111\u1ecbnh ngh\u0129a v\u00f4 c\u00f9ng \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 hi\u1ec3u. Khi m\u1ed9t v\u1eadt n\u00e0y t\u00e1c d\u1ee5ng k\u00e9o ho\u1eb7c \u0111\u1ea9y l\u00ean m\u1ed9t v\u1eadt kh\u00e1c \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u00e1c d\u1ee5ng l\u1ef1c. C\u00f3 r\u1ea5t nhi\u1ec1u ho\u1ea1t \u0111\u1ed9ng trong th\u1ef1c t\u1ebf s\u1eed d\u1ee5ng \u0111\u1ebfn l\u1ef1c. Ngay c\u1ea3 m\u1ed9t v\u1eadt khi \u0111\u1ee9ng y\u00ean c\u0169ng \u0111ang c\u00f3 l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt \u0111\u00f3. Tr\u1ecdng l\u1ef1c l\u00e0 m\u1ed9t trong nh\u1eefng l\u1ef1c c\u01a1 b\u1ea3n m\u00e0 m\u1ecdi v\u1eadt tr\u00ean tr\u00e1i \u0111\u1ea5t \u0111\u1ec1u ch\u1ecbu t\u00e1c d\u1ee5ng.<\/p>\n\n\n\n Nh\u01b0 ch\u00fang ta \u0111\u00e3 bi\u1ebft, tr\u00e1i \u0111\u1ea5t kh\u00f4ng ng\u1eebng quay v\u00e0 di chuy\u1ec3n theo qu\u1ef9 \u0111\u1ea1o. Tr\u1ecdng l\u1ef1c ch\u00ednh l\u00e0 l\u1ef1c h\u00fat c\u1ee7a tr\u00e1i \u0111\u1ea5t gi\u00fap cho m\u1ecdi v\u1eadt c\u00f3 th\u1ec3 \u0111\u1ee9ng y\u00ean tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a tr\u00e1i \u0111\u1ea5t. N\u1ebfu kh\u00f4ng c\u00f3 tr\u1ecdng l\u1ef1c, b\u1ea5t c\u1ee9 \u0111\u1ed3 v\u1eadt, con v\u1eadt n\u00e0o, hay c\u1ea3 con ng\u01b0\u1eddi c\u0169ng c\u00f3 th\u1ec3 b\u1ecb v\u0103ng trong qu\u00e1 tr\u00ecnh tr\u00e1i \u0111\u1ea5t quay. Tr\u1ecdng l\u1ef1c khi ph\u00e2n t\u00edch l\u1ef1c c\u0169ng c\u00f3 c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c ri\u00eang bi\u1ec7t. Tuy nhi\u00ean, m\u1ed9t v\u1eadt kh\u00f4ng ch\u1ec9 ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a m\u1ed9t l\u1ef1c duy nh\u1ea5t. M\u1ed9t v\u1eadt c\u00f3 th\u1ec3 ch\u1ecbu t\u00e1c d\u1ee5ng c\u1ee7a nhi\u1ec1u l\u1ef1c kh\u00e1c nhau. Hay ch\u00fang ta c\u00f2n g\u1ecdi l\u00e0 t\u1ed5 h\u1ee3p l\u1ef1c.<\/p>\n\n\n\n L\u1ef1c l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng vect\u01a1 c\u00f3 ph\u01b0\u01a1ng, chi\u1ec1u \u0111\u1ed9 l\u1edbn. Gi\u1ed1ng nh\u01b0 trong to\u00e1n h\u1ecdc c\u00e1c em \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn. Khi ph\u00e2n t\u00edch l\u1ef1c, ch\u00fang ta c\u0169ng c\u1ea7n ph\u1ea3i x\u00e1c \u0111\u1ecbnh r\u00f5 ph\u01b0\u01a1ng chi\u1ec1u c\u1ee7a l\u1ef1c. Nh\u01b0 v\u1eady, ch\u00fang ta m\u1edbi c\u00f3 th\u1ec3 bi\u1ebft \u0111\u01b0\u1ee3c l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt nh\u01b0 th\u1ebf n\u00e0o. Hay n\u00f3i c\u00e1ch kh\u00e1c, khi ch\u00fang ta x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng chi\u1ec1u c\u1ee7a l\u1ef1c ch\u00ednh l\u00e0 c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c tr\u00ean h\u00ecnh v\u1ebd. Trong tr\u01b0\u1eddng h\u1ee3p l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt l\u00e0 l\u1ef1c c\u00e2n b\u1eb1ng. V\u1eadt kh\u00f4ng thay \u0111\u1ed5i qu\u1ef9 \u0111\u1ea1o, hay di chuy\u1ec3n khi ch\u1ecbu t\u00e1c d\u1ee5ng l\u1ef1c. Th\u00ec ch\u00fang ta v\u1eabn ph\u1ea3i ph\u00e2n t\u00edch v\u00e0 l\u00fd gi\u1ea3i \u0111\u00e2u l\u00e0 hai l\u1ef1c c\u00e2n b\u1eb1ng t\u00e1c d\u1ee5ng l\u00ean v\u1eadt.<\/p>\n\n\n\n Hai l\u1ef1c \u0111\u1ed1i kh\u00e1ng l\u00e0 g\u00ec<\/p>\n\n\n\n T\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c l\u00ean v\u1eadt<\/p>\n\n\n\n Trong th\u1ef1c t\u1ebf, ch\u00fang ta c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng nh\u1eadn ra, khi n\u00e0o m\u1ed9t v\u1eadt c\u00f3 l\u1ef1c t\u00e1c d\u1ee5ng v\u00e0o. Kh\u00f4ng k\u1ec3 \u0111\u1ebfn tr\u01b0\u1eddng h\u1ee3p hai l\u1ef1c c\u00e2n b\u1eb1ng t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt. Th\u00ec khi c\u00f3 m\u1ed9t l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean m\u1ed9t v\u1eadt s\u1ebd c\u00f3 nh\u1eefng d\u1ea5u hi\u1ec7u sau \u0111\u00e2y:<\/p>\n\n\n\n L\u1ef1c l\u00e0 nguy\u00ean nh\u00e2n thay \u0111\u1ed5i v\u1eadn t\u1ed1c c\u1ee7a v\u1eadt. Khi m\u1ed9t v\u1eadt \u0111ang \u0111\u1ee9ng y\u00ean \u0111\u1ed9t nhi\u00ean chuy\u1ec3n \u0111\u1ed9ng. Ho\u1eb7c v\u1eadt \u0111ang chuy\u1ec3n \u0111\u1ed9ng ch\u1eadm tr\u1edf n\u00ean di chuy\u1ec3n nhanh h\u01a1n ho\u1eb7c ch\u1eadm h\u01a1n. Th\u00ec ta n\u00f3i, v\u1eadt b\u1ecb m\u1ed9t l\u1ef1c t\u00e1c m\u1edbi t\u00e1c \u0111\u1ed9ng l\u00ean. \u0110\u00e2y c\u0169ng ch\u00ednh l\u00e0 l\u00fac ch\u00fang ta c\u1ea7n ph\u00e2n t\u00edch l\u1ef1c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh l\u1ef1c m\u1edbi t\u00e1c \u0111\u1ed9ng. Ph\u01b0\u01a1ng chi\u1ec1u \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c s\u1ebd quy\u1ebft \u0111\u1ecbnh s\u1ef1 thay \u0111\u1ed5i v\u1eadn t\u1ed1c c\u1ee7a v\u1eadt.<\/p>\n\n\n\n L\u1ef1c t\u00e1c \u0111\u1ed9ng khi\u1ebfn cho v\u1eadt b\u1ecb bi\u1ebfn d\u1ea1ng. Trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p, khi c\u00f3 l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt. V\u1eadt kh\u00f4ng b\u1ecb thay \u0111\u1ed5i qu\u1ef9 \u0111\u1ea1o, v\u1eadn t\u1ed1c di chuy\u1ec3n m\u00e0 b\u1ecb bi\u1ebfn d\u1ea1ng. Th\u00ec ta n\u00f3i, v\u1eadt \u0111ang ch\u1ecbu m\u1ed9t l\u1ef1c t\u00e1c d\u1ee5ng. V\u00ed d\u1ee5 \u0111\u01a1n gi\u1ea3n nh\u01b0 khi ch\u00fang ta c\u1ea7m vi\u00ean g\u1ea1ch \u0111\u1eadp xu\u1ed1ng \u0111\u1ea5t. Vi\u00ean g\u1ea1ch b\u1ecb v\u1ee1, th\u00ec vi\u00ean g\u1ea1ch \u0111ang ch\u1ecbu t\u00e1c d\u1ee5ng l\u1ef1c t\u1eeb tay ta v\u00e0 m\u1eb7t \u0111\u1ea5t. Tuy nhi\u00ean \u0111\u1ec3 ph\u00e2n t\u00edch l\u1ef1c trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y s\u1ebd kh\u00e1 ph\u1ee9c t\u1ea1p. C\u00e1c em s\u1ebd g\u1eb7p nh\u1eefng b\u00e0i t\u1eadp ph\u00e2n t\u00edch l\u1ef1c d\u1ec5 d\u00e0ng h\u01a1n trong tr\u01b0\u1eddng tr\u00ecnh v\u1eadt l\u00fd 8.<\/p>\n\n\n\n Khi ch\u00fang ta nh\u1eadn ra v\u1eadt \u0111ang ch\u1ecbu t\u00e1c d\u1ee5ng l\u1ef1c \u0111\u1ec1u c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n l\u1ef1c. Tuy nhi\u00ean, c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c trong t\u1eebng t\u00ecnh hu\u1ed1ng l\u00e0 kh\u00e1c nhau. T\u00f9y theo l\u1ef1c t\u00e1c \u0111\u1ed9ng, vi\u1ec7c bi\u1ec3u di\u1ec5n l\u1ef1c s\u1ebd kh\u00f3 d\u1ec5 kh\u00e1c nhau. V\u1edbi nh\u1eefng l\u1ef1c c\u01a1 b\u1ea3n nh\u01b0 l\u1ef1c n\u00e2ng, k\u00e9o, \u0111\u1ea9y th\u00ec vi\u1ec7c bi\u1ec3u di\u1ec5n l\u1ef1c kh\u00e1 d\u1ec5 d\u00e0ng. \u0110\u1ec3 bi\u1ec3u di\u1ec5n \u0111\u01b0\u1ee3c l\u1ef1c ch\u00ednh x\u00e1c, c\u00e1c em c\u1ea7n ph\u1ea3i nh\u1edb c\u00e1c quy \u01b0\u1edbc khi bi\u1ec3n di\u1ec5n l\u1ef1c.<\/p>\n\n\n\n C\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c<\/p>\n\n\n\n \u0110\u1ec3 c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n l\u1ef1c ch\u00ednh x\u00e1c, c\u00e1c em c\u1ea7n ph\u1ea3i nh\u1edb l\u1ef1c l\u00e0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng vect\u01a1. Khi bi\u1ec3u di\u1ec5n l\u1ef1c, ch\u00fang ta s\u1ebd bi\u1ec3u di\u1ec5n nh\u01b0 m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng vect\u01a1 th\u00f4ng th\u01b0\u1eddng.<\/p>\n\n\n\n L\u1ef1c \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n l\u00e0 m\u1ed9t m\u0169i t\u00ean th\u1eb3ng. V\u1edbi g\u1ed1c l\u00e0 \u0111i\u1ec3m m\u00e0 l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt. Hay ch\u00fang ta c\u00f2n g\u1ecdi \u0111\u00e2y l\u00e0 \u0111i\u1ec3m \u0111\u1eb7t c\u1ee7a l\u1ef1c, g\u1ed1c c\u1ee7a l\u1ef1c. Chi\u1ec1u v\u00e0 ph\u01b0\u01a1ng c\u1ee7a m\u0169i t\u00ean ch\u00ednh l\u00e0 chi\u1ec1u v\u00e0 ph\u01b0\u01a1ng c\u1ee7a l\u1ef1c. V\u1edbi nh\u1eefng b\u00e0i \u0111\u00e3 cho bi\u1ebft s\u1eb5n \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c. Th\u00ec \u0111\u1ed9 l\u1edbn n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c quy \u01b0\u1edbc v\u1edbi m\u1ed9t t\u1ec9 l\u1ec7 cho tr\u01b0\u1edbc. \u0110\u1ed9 d\u00e0i c\u1ee7a m\u0169i t\u00ean s\u1ebd tu\u00e2n theo \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1ee3c quy \u01b0\u1edbc n\u00e0y. \u0110\u00e2y ch\u00ednh l\u00e0 c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c b\u1eb1ng h\u00ecnh v\u1ebd d\u1ec5 d\u00e0ng nh\u1ea5t.<\/p>\n\n\n\n \u0110\u1ed1i v\u1edbi nh\u1eefng \u0111\u1ec1 b\u00e0i cho s\u1eb5n ph\u01b0\u01a1ng v\u00e0 chi\u1ec1u c\u1ee7a l\u1ef1c th\u00ec c\u00e1c em s\u1ebd d\u1ec5 d\u00e0ng bi\u1ec3u di\u1ec5n l\u1ef1c h\u01a1n. Khi bi\u1ec3u di\u1ec5n l\u1ef1c lu\u00f4n ph\u1ea3i nh\u1edb h\u1ebft t\u1ea5t c\u1ea3 c\u00e1c l\u1ef1c t\u00e1c \u0111\u1ed9ng l\u00ean v\u1eadt. Tr\u00e1nh tr\u01b0\u1eddng h\u1ee3p bi\u1ec3u di\u1ec5n thi\u1ebfu l\u1ef1c g\u00e2y sai, thi\u1ebfu trong vi\u1ec7c l\u00e0m b\u00e0i t\u1eadp. M\u1ecdi v\u1eadt \u0111\u1ec1u \u0111\u01b0\u1ee3c tr\u1ecdng l\u1ef1c t\u00e1c d\u1ee5ng. N\u1ebfu \u0111\u1ec1 b\u00e0i kh\u00f4ng \u0111\u1ec1 c\u1eadp \u0111\u1ebfn tr\u1ecdng l\u1ef1c. C\u00e1c em v\u1eabn ph\u1ea3i v\u1ebd tr\u1ecdng l\u1ef1c t\u00e1c d\u1ee5ng v\u00e0o v\u1eadt nh\u01b0 th\u1ebf n\u00e0o. \u0110\u00e2y ch\u00ednh l\u00e0 \u0111i\u1ec1u m\u00e0 m\u1ed9t s\u1ed1 em khi l\u00e0m b\u00e0i c\u00f2n hay qu\u00ean. C\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c kh\u00e1c nhau t\u00f9y theo ph\u01b0\u01a1ng chi\u1ec1u, \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n.<\/p>\n\n\n\n K\u00ed hi\u1ec7u vect\u01a1 l\u1ef1c<\/p>\n\n\n\n Ngo\u00e0i ra, sau khi v\u1ebd, ph\u00e2n t\u00edch l\u1ef1c, c\u00e1c em c\u1ea7n ph\u1ea3i k\u00fd hi\u1ec7u t\u00ean c\u1ee7a l\u1ef1c v\u00e0o h\u00ecnh v\u1ebd. Nh\u01b0 v\u1eady, c\u00e1c em m\u1edbi c\u00f3 th\u1ec3 nh\u1eadn bi\u1ebft \u0111\u01b0\u1ee3c \u0111\u00e2u l\u00e0 l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt. C\u00e1ch k\u00ed hi\u1ec7u t\u00ean c\u1ee7a l\u1ef1c ch\u00ednh l\u00e0 k\u00ed hi\u1ec7u vect\u01a1 l\u1ef1c. Vect\u01a1 l\u1ef1c \u0111\u01b0\u1ee3c k\u00ed hi\u1ec7u b\u1eb1ng ch\u1eef F c\u00f3 m\u0169i t\u00ean nh\u1ecf ph\u00eda tr\u00ean \u0111\u1ea7u. T\u00f9y theo t\u00ean c\u1ee7a l\u1ef1c c\u00e1c em c\u00f3 th\u1ec3 ghi t\u1eaft ph\u00eda d\u01b0\u1edbi ch\u00e2n ch\u1eef F \u0111\u1ec3 th\u1ec3 hi\u1ec7n.<\/p>\n\n\n\n \u0110\u1ed1i v\u1edbi vi\u1ec7c ch\u1ec9 ra \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c, c\u00e1c em ch\u1ec9 c\u1ea7n s\u1eed d\u1ee5ng k\u00ed hi\u1ec7u F v\u00e0 t\u00ean vi\u1ebft t\u1eaft. \u0110\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c kh\u00f4ng ph\u1ea3i l\u00e0 vect\u01a1 l\u1ef1c n\u00ean kh\u00f4ng c\u1ea7n \u0111\u1ebfn m\u0169i t\u00ean tr\u00ean \u0111\u1ea7u k\u00fd hi\u1ec7u l\u1ef1c. C\u00e1c em n\u00ean ghi ch\u00e9p l\u1ea1i nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y \u0111\u1ec3 h\u1ecdc c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c ch\u00ednh x\u00e1c nh\u1ea5t. Ch\u1ec9 c\u1ea7n thi\u1ebfu m\u1ed9t trong nh\u1eefng \u0111i\u1ec1u tr\u00ean \u0111\u00e2y, c\u00e1c em c\u00f3 th\u1ec3 l\u00e0m sai b\u00e0i t\u1eadp c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n B\u00e0i t\u1eadp v\u1ec1 c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c<\/p>\n\n\n\n M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c<\/p>\n\n\n\n \u0110\u1ed1i v\u1edbi ch\u1ee7 \u0111\u1ec1 n\u00e0y, b\u00e0i t\u1eadp c\u1ee7a c\u00e1c em h\u1ea7u h\u1ebft s\u1ebd l\u00e0 v\u1ebd v\u00e0 ph\u00e2n t\u00edch l\u1ef1c. M\u1ed9t s\u1ed1 d\u1ea1ng b\u00e0i n\u00e2ng cao h\u01a1n s\u1ebd \u0111\u00f2i h\u1ecfi c\u00e1c em v\u1ebd ph\u00e2n t\u00edch. Sau \u0111\u00f3 t\u00ednh to\u00e1n v\u00e0 t\u00ednh ra k\u1ebft qu\u1ea3 c\u1ee7a t\u1ed5 h\u1ee3p l\u1ef1c. Tuy nhi\u00ean ch\u1ec9 c\u1ea7n c\u00e1c em h\u1ecdc c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c ch\u00ednh x\u00e1c. Th\u00ec nh\u1eefng b\u01b0\u1edbc l\u00e0m b\u00e0i t\u1eadp v\u1ec1 sau s\u1ebd r\u1ea5t \u0111\u01a1n gi\u1ea3n v\u00e0 kh\u00f4ng b\u1ecb nh\u1ea7m l\u1eabn. Ph\u00e2n t\u00edch \u0111\u1ee7 c\u00e1c l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt c\u00e1c em s\u1ebd t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c t\u1ed5 h\u1ee3p l\u1ef1c ch\u00ednh x\u00e1c h\u01a1n.<\/p>\n\n\n\n B\u00ean c\u1ea1nh vi\u1ec7c v\u1ebd v\u00e0 ph\u00e2n t\u00edch l\u1ef1c, c\u00e1c em s\u1ebd \u0111\u01b0\u1ee3c h\u1ecdc v\u1ec1 c\u00e1ch t\u00ednh to\u00e1n \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c. Nh\u1eefng c\u00f4ng th\u1ee9c kh\u00e1c nhau \u0111\u1ec3 t\u00ednh l\u1ef1c s\u1ebd \u0111\u01b0\u1ee3c \u0111\u01b0a ra. C\u00e1c em ch\u1ec9 c\u1ea7n suy ngh\u0129 v\u00e0 v\u1eadn d\u1ee5ng \u0111\u00fang c\u00f4ng th\u1ee9c s\u1ebd c\u00f3 k\u1ebft qu\u1ea3 ch\u00ednh x\u00e1c. \u0110i\u1ec1u n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c c\u00e1c th\u1ea7y c\u00f4 gi\u1ea3ng d\u1ea1y tr\u00ean l\u1edbp theo t\u1eebng tr\u01b0\u1eddng h\u1ee3p b\u00e0i t\u1eadp kh\u00e1c nhau. C\u00e1c em h\u00e3y ch\u00fa \u00fd ghi nh\u1edb v\u00e0 v\u1eadn d\u1ee5ng l\u00e0m b\u00e0i t\u1eadp th\u1eadt t\u1ed1t nh\u00e9!<\/p>\n\n\n\n C\u00e1c c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c l\u00e0 g\u00ec?<\/p>\n\n\n\n C\u00f3 th\u1ec3 n\u00f3i, nh\u1eefng ki\u1ebfn th\u1ee9c v\u1ec1 c\u00e1ch bi\u1ec3u di\u1ec5n l\u1ef1c \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00fang t\u00f4i t\u00ecm hi\u1ec3u v\u00e0 \u0111\u1ec1 c\u1eadp tr\u00ean \u0111\u00e2y. Nh\u1eefng ki\u1ebfn th\u1ee9c n\u00e0y \u0111\u00e3 \u0111i k\u00e8m v\u1edbi v\u00ed d\u1ee5 th\u1ef1c t\u1ebf n\u00ean s\u1ebd d\u1ec5 d\u00e0ng \u0111\u1ec3 ghi nh\u1edb. C\u00e1c em c\u00f3 th\u1ec3 ghi ch\u00e9p l\u1ea1i, v\u00e0 h\u1ecdc thu\u1ed9c \u0111\u1ec3 v\u1eadn d\u1ee5ng th\u1eadt t\u1ed1t. Nh\u1eefng b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn bi\u1ec3u di\u1ec5n l\u1ef1c trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd 8 c\u00f3 r\u1ea5t nhi\u1ec1u. H\u1ecdc t\u1eadp<\/a> th\u1eadt t\u1ed1t ngay t\u1eeb nh\u1eefng ki\u1ebfn th\u1ee9c ban \u0111\u1ea7u s\u1ebd gi\u00fap c\u00e1c em \u0111\u1ea1t k\u1ebft qu\u1ea3 t\u1ed1t h\u01a1n. C\u1ea3m \u01a1n c\u00e1c em \u0111\u00e3 \u0111\u00f3n \u0111\u1ecdc b\u00e0i vi\u1ebft h\u00f4m nay. H\u00e3y tham kh\u1ea3o th\u00eam c\u1ea3 k<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":" Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Trong cu\u1ed9c s\u1ed1ng, ch\u00fang ta th\u01b0\u1eddng d\u00f9ng nhi\u1ec1u \u0111\u1ebfn l\u1ef1c. L\u1ef1c k\u00e9o, l\u1ef1c \u0111\u1ea9y, l\u1ef1c h\u00fat,\u2026 Tuy nhi\u00ean, ch\u00fang ta l\u1ea1i kh\u00f4ng h\u1ec1 bi\u1ebft \u0111\u01b0\u1ee3c ph\u01b0\u01a1ng chi\u1ec1u \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c n\u1ebfu kh\u00f4ng ph\u00e2n t\u00edch. C\u00f3 c\u00e1ch n\u00e0o \u0111\u1ec3 ch\u00fang ta x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y hay kh\u00f4ng? \u0110\u00e2y […]<\/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":[4,7],"tags":[],"class_list":["post-1203","post","type-post","status-publish","format-standard","hentry","category-trung-hoc","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1203","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=1203"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1203\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1203"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1203"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1203"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}