{"id":6761,"date":"2019-04-02T17:38:42","date_gmt":"2019-04-02T10:38:42","guid":{"rendered":"https:\/\/thienhabet.com\/?p=6761"},"modified":"2020-08-03T01:30:00","modified_gmt":"2020-08-02T18:30:00","slug":"huong-dan-cach-tinh-xien-bong","status":"publish","type":"post","link":"https:\/\/\/huong-dan-cach-tinh-xien-bong","title":{"rendered":"H\u01b0\u1edbng d\u1eabn c\u00e1ch t\u00ednh xi\u00ean b\u00f3ng c\u1ef1c d\u1ec5 cho c\u00e1c anh em l\u00ednh m\u1edbi"},"content":{"rendered":"

V\u1edbi c\u00e1c anh em \u0111am m\u00ea c\u00e1 \u0111\u1ed9 th\u00ec nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i bi\u1ebft c\u00e1ch \u0111\u1ecdc k\u00e8o b\u00f3ng, t\u00ednh xi\u00ean b\u00f3ng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 c\u01b0\u1ee3c chu\u1ea9n x\u00e1c nh\u1ea5t. Ng\u01b0\u1eddi ch\u01a1i c\u00e1 \u0111\u1ed9 c\u1ea7n ph\u1ea3i bi\u1ebft c\u00e1ch t\u00ednh xi\u00ean b\u00f3ng<\/strong> \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 d\u00e0ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng b\u1ecb thua khi tham gia c\u00e1 \u0111\u1ed9. \u0110\u1ed3ng th\u1eddi n\u1ebfu nh\u01b0 c\u00e1c b\u1ea1n kh\u00f4ng mu\u1ed1n m\u1ea5t tr\u1eafng tay th\u00ec nh\u1ea5t \u0111\u1ecbnh ph\u1ea3i bi\u1ebft c\u00e1ch t\u00ednh c\u00e1c k\u00e8o t\u00e0i x\u1ec9u, k\u00e8o Ch\u00e2u \u00c1, k\u00e8o Ch\u00e2u \u00c2u,\u2026 Tuy nhi\u00ean vi\u1ec7c c\u00e1 c\u01b0\u1ee3c n\u00e0y c\u0169ng c\u00f3 nh\u1eefng r\u1ee7i ro nh\u1ea5t \u0111\u1ecbnh n\u00ean c\u00e1c b\u1ea1n c\u1ea7n c\u00e2n nh\u1eafc tr\u01b0\u1edbc khi th\u1ef1c hi\u1ec7n c\u00e1 \u0111\u1ed9.<\/p>\n

B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y Kubet<\/a> s\u1ebd h\u01b0\u1edbng d\u1eabn anh em bi\u1ebft c\u00e1ch t\u00ednh xi\u00ean b\u00f3ng c\u1ef1c d\u1ec5 nh\u00e9.<\/p>\n

\"c\u01b0\u1ee3c
c\u01b0\u1ee3c xi\u00ean<\/figcaption><\/figure>\n

H\u01b0\u1edbng d\u1eabn c\u00e1ch t\u00ednh xi\u00ean b\u00f3ng<\/strong><\/h2>\n

\u0110\u1ec3 c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n t\u00ednh xi\u00ean b\u00f3ng ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ea1t k\u1ebft qu\u1ea3 cao nh\u1ea5t c\u00e1c b\u1ea1n n\u00ean bi\u1ebft c\u00e1ch t\u00ednh c\u00e1c k\u00e8o b\u00f3ng. N\u1ebfu kh\u00f4ng c\u1ea9n th\u1eadn trong vi\u1ec7c \u0111\u1eb7t c\u01b0\u1ee3c th\u00ec r\u1ea5t d\u1ec5 b\u1ecb m\u1ea5t h\u1ebft, kh\u00f4ng c\u00f3 kh\u1ea3 n\u0103ng v\u1ef1c l\u1ea1i \u0111\u01b0\u1ee3c. Nh\u01b0ng n\u1ebfu b\u1ea1n bi\u1ebft c\u00e1c m\u1eb9o ch\u01a1i c\u00e1 \u0111\u1ed9, c\u00f3 c\u00e1i nh\u00ecn xa h\u01a1n th\u00ec s\u1ebd c\u00f3 th\u1ec3 th\u1eafng \u0111\u1eadm.<\/p>\n

Hi\u1ec7n nay, c\u00f3 r\u1ea5t nhi\u1ec1u h\u00ecnh th\u1ee9c c\u00e1 \u0111\u1ed9 b\u00f3ng \u0111\u00e1 kh\u00e1c nhau \u0111\u00f2i h\u1ecfi c\u00e1c anh \u01a1i ch\u01a1i c\u00e1 \u0111\u1ed9 ph\u1ea3i hi\u1ec3u r\u00f5 v\u1ec1 v\u1ea5n \u0111\u1ec1 n\u00e0y. H\u01b0\u1edbng d\u1eabn c\u00e1ch t\u00ednh xi\u00ean b\u00f3ng theo t\u1eebng h\u00ecnh th\u1ee9c kh\u00e1c nhau nh\u01b0 sau:<\/p>\n

C\u00e1ch t\u00ednh xi\u00ean b\u00f3ng k\u00e8o Ch\u00e2u \u00c2u <\/em><\/strong><\/h3>\n

K\u00e8o Ch\u00e2u \u00c2u l\u00e0 k\u00e8o b\u00f3ng \u0111\u00e1 ph\u1ed5 bi\u1ebfn hi\u1ec7n nay, ng\u01b0\u1eddi ta th\u01b0\u1eddng s\u1eed d\u1ee5ng k\u00e8o n\u00e0y \u0111\u1ebb c\u00e1 c\u01b0\u1ee3c c\u00e1c tr\u1eadn \u0111\u1ea5u thu\u1ed9c gi\u1ea3i \u0111\u1ea5u Ch\u00e2u \u00c2u. Khi ch\u01a1i k\u00e8o n\u00e0y c\u00e1c b\u1ea1n s\u1ebd c\u00f3 c\u01a1 h\u1ed9i chi\u1ebfn th\u1eafng cao h\u01a1n r\u1ea5t nhi\u1ec1u. V\u00e0 t\u1ef7 l\u1ec7 c\u01b0\u1ee3c c\u0169ng l\u1edbn h\u01a1n so v\u1edbi c\u00e1c k\u00e8o kh\u00e1c. Ch\u00ednh v\u00ec v\u1eady, c\u00e1c anh em \u0111am m\u00ea c\u00e1 \u0111\u1ed9 th\u01b0\u1eddng \u0111\u1eb7t c\u01b0\u1ee3c theo k\u00e8o Ch\u00e2u \u00c2u.<\/p>\n

C\u00f4ng th\u1ee9c t\u00ednh nh\u01b0 sau:<\/strong><\/h4>\n

H\u1ec7 s\u1ed1 c\u01b0\u1ee3c k\u00e8o 1 x H\u1ec7 s\u1ed1 c\u01b0\u1ee3c k\u00e8o 2 x H\u1ec7 s\u1ed1 c\u01b0\u1ee3c k\u00e8o 3 x \u2026 x H\u1ec7 s\u1ed1 c\u01b0\u1ee3c k\u00e8o n<\/p>\n

C\u00e1c h\u1ec7 s\u1ed1 c\u01b0\u1ee3c n\u00e0y l\u00e0 do nh\u00e0 c\u00e1i quy\u1ebft \u0111\u1ecbnh c\u0103n c\u1ee9 theo kh\u1ea3 n\u0103ng thi \u0111\u1ea5u gi\u1eefa 2 \u0111\u1ed9i. T\u1ef7 l\u1ec7 c\u01b0\u1ee3c \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u chu\u1ea9n x\u00e1c nh\u1ea5t c\u00f3 quy \u0111\u1ecbnh ri\u00eang ch\u1ee9 kh\u00f4ng ph\u1ea3i th\u00edch l\u00e0 \u0111\u1eb7t.<\/p>\n

V\u00ed d\u1ee5: B\u1ea1n c\u01b0\u1ee3c xi\u00ean cho 3 k\u00e8o v\u1edbi s\u1ed1 ti\u1ec1n c\u01b0\u1ee3c l\u00e0 100$ ch\u1eb3ng h\u1ea1n.<\/p>\n

T\u1ef7 l\u1ec7 k\u00e8o c\u01b0\u1ee3c nh\u01b0 sau:<\/p>\n