Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n
\u0110i\u1ec7n v\u00e0 m\u1ea1ch \u0111i\u1ec7n l\u00e0 nh\u1eefng \u0111i\u1ec1u ch\u00fang ta g\u1eb7p ph\u1ea3i r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y. Vai tr\u00f2 c\u1ee7a m\u1ea1ch \u0111i\u1ec7n trong cu\u1ed9c s\u1ed1ng \u0111\u00e3 tr\u1edf n\u00ean v\u00f4 c\u00f9ng to l\u1edbn v\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai trong s\u1ed1 ch\u00fang ta c\u0169ng hi\u1ec3u bi\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i m\u1ea1ch \u0111i\u1ec7n c\u0169ng nh\u01b0 c\u1ea5u t\u1ea1o. Ki\u1ebfn th\u1ee9c b\u1ed9 m\u00f4n v\u1eadt l\u00fd 9 s\u1ebd gi\u00fap c\u00e1c em gi\u1ea3i \u0111\u00e1p \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y. Trong b\u00e0i vi\u1ebft ng\u00e0y h\u00f4m nay, ch\u00fang ta s\u1ebd c\u00f9ng nhau t\u00ecm hi\u1ec3u v\u1ec1 \u0111o\u1ea1n m\u1ea1ch song song v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a n\u00f3 nh\u00e9!<\/p>\n\n\n\n
M\u1ea1ch \u0111i\u1ec7n l\u00e0 g\u00ec?<\/p>\n\n\n\n
Tr\u01b0\u1edbc khi \u0111\u1ebfn v\u1edbi c\u00e1c ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch v\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a n\u00f3, ch\u00fang ta c\u1ea7n ph\u1ea3i c\u00f3 ki\u1ebfn th\u1ee9c t\u1ed5ng qu\u00e1t. M\u1ea1ch \u0111i\u1ec7n l\u00e0 g\u00ec ch\u00ednh l\u00e0 m\u1ed9t c\u00e2u h\u1ecfi c\u01a1 b\u1ea3n ch\u00fang ta c\u1ea7n ph\u1ea3i bi\u1ebft trong ch\u1ee7 \u0111\u1ec1 n\u00e0y. M\u1ea1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 t\u1eadp h\u1ee3p c\u00e1c linh ki\u1ec7n \u0111i\u1ec7n t\u1eed v\u00e0 ph\u1ea7n t\u1eed \u0111i\u1ec7n \u0111\u01b0\u1ee3c m\u1eafc trong m\u1ed9t h\u1ec7 th\u1ed1ng d\u00e2y d\u1eabn \u0111i\u1ec7n. Hi\u1ec3u m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, nh\u1eefng thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u00e0 linh ki\u1ec7n \u0111\u01b0\u1ee3c m\u1eafc c\u00f9ng d\u00e2y d\u1eabn s\u1ebd t\u1ea1o l\u00ean m\u1ea1ch \u0111i\u1ec7n. Tuy nhi\u00ean n\u1ebfu \u0111\u1ec3 t\u00ecm hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 linh ki\u1ec7n v\u00e0 ph\u1ea7n t\u1eed \u0111i\u1ec7n, c\u00e1c em s\u1ebd g\u1eb7p ph\u1ea3i r\u1ea5t nhi\u1ec1u ki\u1ebfn th\u1ee9c c\u1ea7u k\u00ec.<\/p>\n\n\n\n
\u0110o\u1ea1n m\u1ea1ch c\u00f3 acquy l\u1eafp song song c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n<\/p>\n\n\n\n
C\u00e1c em ch\u1ec9 c\u1ea7n t\u00ecm hi\u1ec3u v\u1ec1 m\u1ea1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n trong ch\u01b0\u01a1ng tr\u00ecnh v\u1eadt l\u00fd l\u1edbp 9. Nh\u1eefng thi\u1ebft b\u1ecb \u0111i\u1ec7n v\u00e0 linh ki\u1ec7n c\u00f3 m\u1eb7t nhi\u1ec1u nh\u1ea5t trong b\u00e0i t\u1eadp c\u1ee7a c\u00e1c em ch\u00ednh l\u00e0 b\u00f3ng \u0111\u00e8n, \u0111i\u1ec7n tr\u1edf, ngu\u1ed3n \u0111i\u1ec7n v\u00e0 d\u00e2y d\u1eabn. D\u1ef1a tr\u00ean c\u00e1c ph\u1ea7n t\u1eed \u0111i\u1ec7n n\u00e0y, c\u00e1c em \u0111\u00e3 c\u00f3 th\u1ec3 l\u1eafp \u0111\u01b0\u1ee3c \u0111\u01b0\u1ee3c m\u1ea1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n. Trong cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang ta, c\u00e1c m\u1ea1ch \u0111i\u1ec7n c\u00f3 th\u1ec3 ph\u1ee9c t\u1ea1p h\u01a1n nhi\u1ec1u l\u1ea7n. \u0110o\u1ea1n m\u1ea1ch song song c\u0169ng ch\u1ec9 l\u00e0 m\u1ed9t ki\u1ec3u l\u1eafp m\u1ea1ch \u0111i\u1ec7n c\u01a1 b\u1ea3n ch\u00fang ta \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u.<\/p>\n\n\n\n
V\u00ed d\u1ee5 v\u1ec1 m\u1ea1ch \u0111i\u1ec7n trong cu\u1ed9c s\u1ed1ng<\/p>\n\n\n\n
M\u1ea1ch \u0111i\u1ec7n trong cu\u1ed9c s\u1ed1ng th\u01b0\u1eddng ng\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ea5t nhi\u1ec1u. Tuy nhi\u00ean v\u1ec1 c\u1ea5u t\u1ea1o c\u0169ng nh\u01b0 c\u00e1ch l\u1eafp th\u00ec ch\u00fang ta kh\u00f3 c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y. B\u1edfi c\u00e1c m\u1ea1ch \u0111i\u1ec7n th\u01b0\u1eddng \u0111\u01b0\u1ee3c l\u1eafp \u1ea9n b\u00ean trong th\u01b0\u1eddng nh\u00e0. \u0110i\u1ec1u n\u00e0y khi\u1ebfn cho vi\u1ec7c t\u00ecm hi\u1ec3u tr\u1edf n\u00ean kh\u00f3 kh\u0103n h\u01a1n. C\u0169ng c\u00f3 r\u1ea5t nhi\u1ec1u ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng. N\u1ebfu c\u00e1c em kh\u00f4ng t\u00ecm hi\u1ec3u v\u1ec1 \u0111o\u1ea1n m\u1ea1ch song song c\u00e1c em s\u1ebd kh\u00f4ng th\u1ec3 bi\u1ebft \u0111\u1ebfn \u0111i\u1ec1u n\u00e0y. \u0110\u00f3 c\u0169ng ch\u00ednh l\u00e0 l\u00fd do c\u00e1c em n\u00ean t\u00ecm hi\u1ec3u v\u1ec1 ngu\u1ed3n g\u1ed1c c\u1ee7a m\u1ea1ch \u0111i\u1ec7n tr\u01b0\u1edbc khi \u0111\u1ebfn v\u1edbi nh\u1eefng ki\u1ebfn th\u1ee9c kh\u00e1c.<\/p>\n\n\n\n
\u0110o\u1ea1n m\u1ea1ch song song l\u00e0 g\u00ec?<\/p>\n\n\n\n
N\u1ebfu nh\u01b0 \u1edf b\u00e0i vi\u1ebft tr\u01b0\u1edbc, c\u00e1c em \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00ecm hi\u1ec3u v\u1ec1 \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp bao g\u1ed3m c\u00e1c ph\u1ea7n t\u1eed \u0111i\u1ec7n m\u1eafc n\u1ed1i ti\u1ebfp. Th\u00ec \u1edf b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd \u0111\u1ebfn v\u1edbi \u0111o\u1ea1n m\u1ea1ch song song. \u0110o\u1ea1n m\u1ea1ch n\u00e0y \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 bao g\u1ed3m c\u00e1c linh ki\u1ec7n, ph\u1ea7n t\u1eed \u0111i\u1ec7n m\u1eafc song song v\u1edbi nhau v\u00e0 n\u1ed1i v\u1edbi ngu\u1ed3n \u0111i\u1ec7n. Khi c\u00e1c linh ki\u1ec7n n\u00e0y m\u1eafc song song v\u00e0 n\u1ed1i v\u00e0o ngu\u1ed3n \u0111i\u1ec7n. Ch\u00fang ta c\u00f3 th\u1ec3 n\u00f3i \u0111\u00e2y ch\u00ednh l\u00e0 m\u1ed9t m\u1ea1ch \u0111i\u1ec7n k\u00edn. Ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 l\u1eafp th\u00eam kh\u00f3a K trong m\u1ea1ch \u0111i\u1ec7n \u0111\u1ec3 ki\u1ec3m so\u00e1t ngu\u1ed3n \u0111i\u1ec7n.<\/p>\n\n\n\n
C\u00e1ch bi\u1ec3u di\u1ec5n \u0111o\u1ea1n m\u1ea1ch song song b\u1eb1ng h\u00ecnh v\u1ebd<\/p>\n\n\n\n
Tuy nhi\u00ean \u0111\u1ed1i v\u1edbi \u0111o\u1ea1n m\u1ea1ch song song c\u00e1c em ch\u1ec9 c\u1ea7n nh\u1edb v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m l\u1eafp \u0111\u1eb7t c\u1ee7a c\u00e1c linh ki\u1ec7n. \u0110\u1ed1i v\u1edbi c\u00e1c ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch, c\u00e1c em c\u1ea7n ph\u1ea3i t\u00ecm hi\u1ec3u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a ch\u00fang. M\u1ea1ch \u0111i\u1ec7n song song c\u0169ng s\u1edf h\u1eefu nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ri\u00eang bi\u1ec7t c\u00e1c em c\u1ea7n ch\u00fa \u00fd. \u0110i\u1ec1u n\u00e0y s\u1ebd gi\u00fap c\u00e1c em l\u00e0m b\u00e0i t\u1eadp d\u1ec5 d\u00e0ng h\u01a1n. Ch\u00fang ta s\u1ebd c\u00f9ng nhau t\u00ecm hi\u1ec3u v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch n\u00e0y ngay sau \u0111\u00e2y.<\/p>\n\n\n\n
\u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n m\u1ea1ch song song<\/p>\n\n\n\n
Khi nh\u1eafc \u0111\u1ebfn m\u1ea1ch \u0111i\u1ec7n, ch\u00fang ta th\u01b0\u1eddng ch\u00fa \u00fd \u0111\u1ebfn c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n, hi\u1ec7u \u0111i\u1ec7n th\u1ebf v\u00e0 \u0111i\u1ec7n tr\u1edf. \u0110\u00e2y c\u0169ng ch\u00ednh l\u00e0 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m ch\u00fang ta s\u1ebd t\u00ecm hi\u1ec3u trong \u0111o\u1ea1n m\u1ea1ch song song.<\/p>\n\n\n\n
C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n<\/p>\n\n\n\n
Trong \u0111o\u1ea1n m\u1ea1ch n\u00e0y, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n qua m\u1ea1ch ch\u00ednh s\u1ebd b\u1eb1ng t\u1ed5ng c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111i qua c\u00e1c ph\u1ea7n t\u1eed \u0111i\u1ec7n. \u0110i\u1ec1u n\u00e0y kh\u00e1c h\u1eb3n so v\u1edbi \u0111o\u1ea1n m\u1ea1ch song song. Ch\u00fang ta c\u00f3 th\u1ec3 hi\u1ec3u m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n. C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111o\u1ea1n m\u1ea1ch song song s\u1ebd b\u1eb1ng t\u1ed5ng c\u00e1c c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u00f3 trong m\u1ea1ch.<\/p>\n\n\n\n
Nh\u1eefng \u0111i\u1ec1u c\u1ea7n bi\u1ebft v\u1ec1 \u0111o\u1ea1n m\u1ea1ch c\u00f3 c\u00e1c thi\u1ebft b\u1ecb l\u1eafp song song<\/p>\n\n\n\n
M\u1ed9t v\u00ed d\u1ee5 c\u01a1 b\u1ea3n cho \u0111o\u1ea1n m\u1ea1ch song song \u0111\u00f3 ch\u00ednh l\u00e0 m\u1ea1ch \u0111i\u1ec7n \u0111\u01b0\u1ee3c l\u1eafp bao g\u1ed3m \u0111\u00e8n v\u00e0 \u0111i\u1ec7n tr\u1edf song song v\u1edbi nhau. Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ee7a m\u1ea1ch s\u1ebd b\u1eb1ng c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n c\u1ee7a \u0111\u00e8n c\u1ed9ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n tr\u1edf. Ch\u00fang ta c\u00f3 th\u1ec3 ghi th\u00e0nh c\u00f4ng th\u1ee9c: I = I \u0111\u00e8n + I \u0111i\u1ec7n tr\u1edf. \u0110i\u1ec1u n\u00e0y ho\u00e0n to\u00e0n \u0111\u00fang v\u1edbi m\u1ea1ch \u0111i\u1ec7n song song.<\/p>\n\n\n\n
Hi\u1ec7u \u0111i\u1ec7n th\u1ebf<\/p>\n\n\n\n
B\u00ean c\u1ea1nh c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n, ch\u00fang ta c\u00f2n x\u00e9t \u0111\u1ebfn hi\u1ec7u \u0111i\u1ec7n th\u1ebf. Hi\u1ec7u \u0111i\u1ec7n th\u1ebf trong \u0111o\u1ea1n m\u1ea1ch song song s\u1ebd b\u1eb1ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf \u0111i qua c\u00e1c m\u1ea1ch r\u1ebd. N\u00f3i m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n, hi\u1ec7u \u0111i\u1ec7n th\u1ebf qua m\u1ea1ch n\u00e0y s\u1ebd b\u1eb1ng nhau \u1edf m\u1ecdi \u0111i\u1ec3m.<\/p>\n\n\n\n
Ch\u00fang ta c\u00f3 th\u1ec3 x\u00e9t tr\u00ean c\u00f9ng v\u00ed d\u1ee5 tr\u00ean. \u0110o\u1ea1n m\u1ea1ch bao g\u1ed3m \u0111\u00e8n v\u00e0 \u0111i\u1ec7n tr\u1edf m\u1eafc song song nhau. Hi\u1ec7u \u0111i\u1ec7n th\u1ebf c\u1ee7a m\u1ea1ch \u0111i\u1ec7n n\u00e0y s\u1ebd b\u1eb1ng hi\u1ec7u \u0111i\u1ec7n th\u1ebf \u0111i qua \u0111\u00e8n v\u00e0 \u0111i\u1ec7n tr\u1edf. Ch\u00fang ta c\u00f3 th\u1ec3 ghi th\u00e0nh c\u00f4ng th\u1ee9c sau: U = U \u0111\u00e8n = U \u0111i\u1ec7n tr\u1edf.<\/p>\n\n\n\n
\u0110\u00e2y ch\u00ednh l\u00e0 \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n m\u1ea1ch n\u00e0y c\u00e1c em c\u1ea7n ph\u1ea3i nh\u1edb. \u0110\u1eb7c \u0111i\u1ec3m n\u00e0y kh\u00e1c h\u1eb3n so v\u1edbi \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp. Ch\u00ednh v\u00ec th\u1ebf, c\u00e1c em c\u1ea7n ph\u00e2n bi\u1ec7t r\u00f5 r\u00e0ng gi\u1eefa hai ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch n\u00e0y. B\u00e0i t\u1eadp c\u1ee7a c\u00e1c em c\u00f3 th\u1ec3 y\u00eau c\u1ea7u nh\u1eadn bi\u1ebft ki\u1ec3u \u0111o\u1ea1n m\u1ea1ch d\u1ef1a tr\u00ean \u0111\u1eb7c \u0111i\u1ec3m.<\/p>\n\n\n\n
\u0110i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a \u0111o\u1ea1n m\u1ea1ch song song<\/p>\n\n\n\n
\u0110o\u1ea1n m\u1ea1ch song song c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m v\u1ec1 \u0111i\u1ec7n tr\u1edf kh\u00e1c v\u1edbi \u0111o\u1ea1n m\u1ea1ch n\u1ed1i ti\u1ebfp. \u0110\u00f3 ch\u00ednh l\u00e0 l\u00fd do ch\u00fang ta c\u1ea7n t\u00ecm hi\u1ec3u v\u00e0 ph\u00e2n bi\u1ec7t \u0111i\u1ec1u n\u00e0y. \u0110i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng c\u1ee7a \u0111o\u1ea1n m\u1ea1ch n\u00e0y c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 sau: \u0110\u1ed1i v\u1edbi \u0111o\u1ea1n m\u1ea1ch g\u1ed3m hai \u0111i\u1ec7n tr\u1edf m\u1eafc song song th\u00ec ngh\u1ecbch \u0111\u1ea3o c\u1ee7a \u0111i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng b\u1eb1ng t\u1ed5ng c\u00e1c ngh\u1ecbch \u0111\u1ea3o c\u1ee7a c\u00e1c \u0111i\u1ec7n tr\u1edf th\u00e0nh ph\u1ea7n. C\u00e1c em c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng bi\u1ec3u th\u1ee9c sau \u0111\u00e2y trong t\u00ednh to\u00e1n.<\/p>\n\n\n\n
V\u00ed d\u1ee5 v\u1ec1 \u0111o\u1ea1n m\u1ea1ch song song th\u01b0\u1eddng g\u1eb7p<\/p>\n\n\n\n
Trong \u0111\u00f3 Rt\u0111 ch\u00ednh l\u00e0 \u0111i\u1ec7n tr\u1edf c\u1ee7a c\u1ea3 m\u1ea1ch \u0111i\u1ec7n. R1, R2 l\u00e0 \u0111i\u1ec7n tr\u1edf \u0111i qua c\u00e1c ph\u1ea7n t\u1eed \u0111i\u1ec7n trong \u0111o\u1ea1n m\u1ea1ch. C\u00f3 th\u1ec3 \u0111\u1ec1 b\u00e0i s\u1ebd cho s\u1eb5n c\u00e1c gi\u00e1 tr\u1ecb n\u00e0y \u0111\u1ec3 c\u00e1c em ti\u1ec7n t\u00ednh to\u00e1n. H\u00e3y s\u1eed d\u1ee5ng c\u00f4ng th\u1ee9c n\u00e0y khi \u00e1p d\u1ee5ng v\u00e0o b\u00e0i t\u1eadp nh\u00e9!<\/p>\n\n\n\n
Ngo\u00e0i ra c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n khi c\u00f3 hai \u0111i\u1ec7n tr\u1edf m\u1eafc song song trong m\u1ea1ch \u0111i\u1ec7n c\u0169ng c\u00f3 \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c. C\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua m\u1ed7i \u0111i\u1ec7n tr\u1edf t\u1ec9 l\u1ec7 ngh\u1ecbch v\u1edbi \u0111i\u1ec7n tr\u1edf \u0111\u00f3. C\u00e1c em c\u00f3 th\u1ec3 bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00f4ng th\u1ee9c d\u01b0\u1edbi \u0111\u00e2y:<\/p>\n\n\n\n
I1\/I2 = R1\/R2.<\/p>\n\n\n\n
Trong \u0111\u00f3 I1, I2 ch\u00ednh l\u00e0 c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n \u0111i qua \u0111i\u1ec7n tr\u1edf 1, 2. R1, R2 ch\u00ednh l\u00e0 \u0111\u1ed9 l\u1edbn \u0111i\u1ec7n tr\u1edf c\u1ee7a 2 \u0111i\u1ec7n tr\u1edf l\u1eafp song song trong m\u1ea1ch. C\u00e1c em c\u1ea7n x\u00e1c \u0111\u1ecbnh \u0111\u00fang nh\u1eefng \u0111i\u1ec1u n\u00e0y \u0111\u1ec3 c\u00f3 th\u1ec3 l\u00e0m b\u00e0i ch\u00ednh x\u00e1c nh\u00e9.<\/p>\n\n\n\n
B\u00e0i t\u1eadp ch\u1ee7 \u0111\u1ec1 n\u00e0y<\/p>\n\n\n\n
D\u1ea1ng b\u00e0i t\u00ednh to\u00e1n trong ch\u1ee7 \u0111\u1ec1 v\u1eadt l\u00fd n\u00e0y c\u00f3 r\u1ea5t nhi\u1ec1u. C\u00e1c em s\u1ebd ph\u1ea3i th\u1ef1c hi\u1ec7n v\u1ebd m\u1ea1ch sau \u0111\u00f3 ph\u00e2n t\u00edch c\u01b0\u1eddng \u0111\u1ed9, hi\u1ec7u \u0111i\u1ec7n th\u1ebf, \u0111i\u1ec7n tr\u1edf. T\u1eeb \u0111\u00f3 m\u1edbi c\u00f3 th\u1ec3 l\u1eafp v\u00e0o c\u00f4ng th\u1ee9c ch\u00ednh x\u00e1c \u0111\u1ec3 t\u00ednh to\u00e1n. \u0110\u00e2y c\u0169ng l\u00e0 nh\u1eefng l\u01b0u \u00fd khi l\u00e0m b\u00e0i c\u1ee7a c\u00e1c em. H\u00e3y ghi ch\u00e9p l\u1ea1i nh\u1eefng c\u00f4ng th\u1ee9c n\u00e0y \u0111\u1ec3 l\u00e0m b\u00e0i ch\u00ednh x\u00e1c nh\u1ea5t.<\/p>\n\n\n\n
Ngo\u00e0i ra, c\u00e1c em c\u0169ng c\u1ea7n \u0111\u1ec3 \u00fd \u0111\u1ebfn \u0111\u01a1n v\u1ecb c\u1ee7a t\u1eebng \u0111\u1ea1i l\u01b0\u1ee3ng c\u00f3 trong c\u00f4ng th\u1ee9c. \u0110\u01a1n v\u1ecb khi t\u00ednh to\u00e1n ph\u1ea3i chu\u1ea9n v\u1edbi \u0111\u01a1n v\u1ecb quy \u01b0\u1edbc. N\u1ebfu kh\u00f4ng k\u1ebft qu\u1ea3 c\u1ee7a c\u00e1c em c\u00f3 th\u1ec3 b\u1ecb sai. N\u1ebfu \u0111\u1ec1 b\u00e0i ch\u01b0a cho \u0111\u01a1n v\u1ecb chu\u1ea9n, c\u00e1c em c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n quy \u0111\u1ed5i tr\u01b0\u1edbc khi l\u00e0m b\u00e0i.<\/p>\n\n\n\n
C\u00f3 th\u1ec3 n\u00f3i, nh\u1eefng ki\u1ebfn th\u1ee9c li\u00ean quan \u0111\u1ebfn ch\u1ee7 \u0111\u1ec1 \u0111o\u1ea1n m\u1ea1ch song song \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u00fang t\u00f4i \u0111\u1ec1 c\u1eadp tr\u00ean \u0111\u00e2y. Hy v\u1ecdng nh\u1eefng \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 gi\u00fap c\u00e1c em l\u00e0m b\u00e0i t\u1ed1t h\u01a1n. Ngo\u00e0i ra, ch\u00fang t\u00f4i c\u0169ng \u0111\u00e3 l\u1ea5y nh\u1eefng v\u00ed d\u1ee5 d\u1ec5 hi\u1ec3u \u0111\u1ec3 c\u00e1c em c\u00f3 th\u1ec3 ti\u1ebfp c\u1eadn b\u00e0i nhanh ch\u00f3ng. C\u00e1c em c\u00f3 th\u1ec3 h\u1ecdc thu\u1ed9c nh\u1eefng v\u00ed d\u1ee5 n\u00e0y \u0111\u1ec3 \u00e1p d\u1ee5ng v\u00e0o d\u1ea1ng b\u00e0i th\u1ef1c t\u1ebf.<\/p>\n\n\n\n
B\u00ean c\u1ea1nh b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang t\u00f4i c\u0169ng c\u00f3 \u0111\u0103ng t\u1ea3i nh\u1eefng b\u00e0i vi\u1ebft kh\u00e1c v\u1ec1 ch\u1ee7 \u0111\u1ec1 v\u1eadt l\u00fd l\u1edbp 9. C\u00e1c em c\u00f3 th\u1ec3 tham kh\u1ea3o ngay t\u1ea1i \u0111\u00e2y. Ho\u1eb7c truy c\u1eadp tr\u1ef1c ti\u1ebfp v\u00e0o trang ch\u1ee7 \u0111\u1ec3 c\u00f3 th\u1ec3 ch\u1ecdn \u0111\u01b0\u1ee3c ph\u1ea7n ki\u1ebfn th\u1ee9c c\u00e1c em mu\u1ed1n<\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"
Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn \u0110i\u1ec7n v\u00e0 m\u1ea1ch \u0111i\u1ec7n l\u00e0 nh\u1eefng \u0111i\u1ec1u ch\u00fang ta g\u1eb7p ph\u1ea3i r\u1ea5t nhi\u1ec1u trong cu\u1ed9c s\u1ed1ng h\u1eb1ng ng\u00e0y. Vai tr\u00f2 c\u1ee7a m\u1ea1ch \u0111i\u1ec7n trong cu\u1ed9c s\u1ed1ng \u0111\u00e3 tr\u1edf n\u00ean v\u00f4 c\u00f9ng to l\u1edbn v\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i ai trong s\u1ed1 ch\u00fang ta c\u0169ng hi\u1ec3u bi\u1ebft […]<\/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-1241","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\/1241","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=1241"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/1241\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=1241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=1241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=1241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}