{"id":43405,"date":"2021-11-17T09:25:30","date_gmt":"2021-11-17T02:25:30","guid":{"rendered":"https:\/\/ben.com.vn\/tin-tuc\/?p=43405"},"modified":"2021-11-29T14:06:39","modified_gmt":"2021-11-29T07:06:39","slug":"so-0-la-so-gi","status":"publish","type":"post","link":"https:\/\/ben.com.vn\/tin-tuc\/so-0-la-so-gi\/","title":{"rendered":"S\u1ed1 0 l\u00e0 s\u1ed1 g\u00ec? L\u00e0 s\u1ed1 ch\u1eb5n hay l\u1ebb? \u00dd ngh\u0129a s\u1ed1 0 trong to\u00e1n h\u1ecdc"},"content":{"rendered":"

S\u1ed1 0 l\u00e0 s\u1ed1 g\u00ec ch\u1eafc h\u1eb3n v\u1eabn \u0111ang l\u00e0 th\u1eafc m\u1eafc c\u1ee7a r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi hi\u1ec7n nay. S\u1ed1 0 l\u00e0 s\u1ed1 ch\u1eb5n hay l\u1ebb? \u0110\u00e2y l\u00e0 c\u00e2u h\u1ecfi g\u00e2y r\u1ea5t nhi\u1ec1u tranh c\u00e3i trong th\u1eddi gian g\u1ea7n \u0111\u00e2y. N\u1ebfu b\u1ea1n c\u0169ng \u0111ang \u0111i t\u00ecm l\u1eddi gi\u1ea3i \u0111\u00e1p cho c\u00e2u h\u1ecfi n\u00e0y th\u00ec \u0111\u1eebng b\u1ecf qua b\u00e0i vi\u1ebft n\u00e0y nh\u00e9. Trong b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y, Ben s\u1ebd gi\u1ea3i \u0111\u00e1p th\u1eafc m\u1eafc m\u1ed9t c\u00e1ch chi ti\u1ebft nh\u1ea5t.<\/p>\n

\"s\u1ed1<\/p>\n

S\u1ed1 0 l\u00e0 s\u1ed1 g\u00ec? S\u1ed1 0 l\u00e0 s\u1ed1 ch\u1eb5n hay l\u1ebb?\u00a0<\/strong><\/h2>\n

Trong to\u00e1n h\u1ecdc, ch\u1eafc ch\u1eafn nhi\u1ec1u l\u1ea7n b\u1ea1n s\u1eed d\u1ee5ng con s\u1ed1 0. V\u1eady b\u1ea1n \u0111\u1eb7t ra c\u00e2u h\u1ecfi s\u1ed1 0 l\u00e0 s\u1ed1 ch\u1eb5n hay l\u1ebb?<\/span><\/p>\n

Trong c\u00e1c ph\u00e9p to\u00e1n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u1edf b\u1eadc ti\u1ec3u h\u1ecdc, gi\u00e1o vi\u00ean g\u1ecdi m\u1ed9t s\u1ed1 chia h\u1ebft cho 2 l\u00e0 m\u1ed9t s\u1ed1 ch\u1eb5n. V\u00e0 khi m\u1ed9t s\u1ed1 kh\u00f4ng chia h\u1ebft cho 2 th\u00ec \u0111\u00f3 l\u00e0 l\u00e0 s\u1ed1 l\u1ebb.\u00a0<\/span><\/p>\n

Khi b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c \u0111i h\u1ecdc th\u00ec \u0111i\u1ec1u c\u0103n b\u1ea3n \u0111\u1ea7u ti\u00ean ta \u0111\u01b0\u1ee3c d\u1ea1y trong ph\u1ea7n \u0110\u1ea1i s\u1ed1 \u0111\u00f3 l\u00e0 t\u00ednh ch\u1eb5n v\u00e0 l\u1ebb. Sau khi \u0111\u01b0\u1ee3c h\u1ecdc, ta c\u00f3 th\u1ec3 ph\u00e2n chia to\u00e0n b\u1ed9 s\u1ed1 nguy\u00ean theo hai lo\u1ea1i \u0111\u00f3 l\u00e0 ch\u1eb5n v\u00e0 l\u1ebb.\u00a0<\/span><\/p>\n

\"s\u1ed1<\/p>\n

Nh\u01b0 \u0111\u00e3 h\u1ecdc th\u00ec vi\u1ec7c x\u00e1c \u0111\u1ecbnh t\u00ednh ch\u1eb5n ho\u1eb7c l\u1ebb c\u1ee7a m\u1ed9t s\u1ed1 nguy\u00ean v\u1ed1n r\u1ea5t \u0111\u01a1n gi\u1ea3n. M\u1ed9t s\u1ed1 chia h\u1ebft cho 2 th\u00ec \u0111\u00f3 \u0111\u00edch th\u1ecb l\u00e0 m\u1ed9t s\u1ed1 ch\u1eb5n v\u00e0 ng\u01b0\u1ee3c l\u1ea1i s\u1ebd l\u00e0 s\u1ed1 l\u1ebb. V\u1eady t\u1eeb ki\u1ebfn th\u1ee9c ch\u1eb5n l\u1ebb nh\u01b0 tr\u00ean th\u00ec s\u1ed1 0 r\u01a1i v\u00e0o tr\u01b0\u1eddng h\u1ee3p th\u1ee9 nh\u1ea5t? Tuy nhi\u00ean v\u1eabn kh\u00e1 nhi\u1ec1u ng\u01b0\u1eddi b\u1ecb “hoang mang” tr\u01b0\u1edbc t\u00ednh ch\u1eb5n l\u1ebb c\u1ee7a con s\u1ed1 0 n\u00e0y. <\/span><\/p>\n

C\u00e1c nh\u00e0 to\u00e1n h\u1ecdc hay nh\u1eefng ng\u01b0\u1eddi quan t\u00e2m h\u1ecd kh\u00f4ng ch\u1eafc n\u00f3 c\u00f3 ph\u1ea3i l\u00e0 s\u1ed1 nguy\u00ean hay kh\u00f4ng v\u00e0 \u0111\u00f4i khi c\u0169ng ch\u1eb3ng bi\u1ebft c\u00e1ch ch\u00ednh x\u00e1c n\u00e0o \u0111\u1ec3 ph\u00e2n bi\u1ebft t\u00ednh ch\u1eb5n hay l\u1ebb c\u1ee7a n\u00f3 c\u1ea3.<\/span><\/p>\n

Tuy nhi\u00ean, s\u1ed1 0 chia h\u1ebft cho 2, cho n\u00ean ta c\u00f3 th\u1ec3 x\u1ebfp s\u1ed1 0 v\u00e0o t\u1eadp h\u1ee3p c\u00e1c s\u1ed1 ch\u1eb5n. Khi ta l\u1ea5y 0 chia cho s\u1ed1 2, th\u01b0\u01a1ng ta nh\u1eadn \u0111\u01b0\u1ee3c l\u00e0 0, s\u1ed1 0 l\u00e0 m\u1ed9t s\u1ed1 nguy\u00ean. V\u00ec v\u1eady ta c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn r\u1eb1ng s\u1ed1 0 l\u00e0 m\u1ed9t s\u1ed1 ch\u1eb5n.<\/span><\/p>\n

\u00dd ngh\u0129a c\u1ee7a s\u1ed1 0 trong to\u00e1n h\u1ecdc<\/strong><\/h2>\n

Trong to\u00e1n h\u1ecdc, ch\u1eafc ch\u1eafn s\u1ed1 0 l\u00e0 s\u1ed1 kh\u00f4ng th\u1ec3 thi\u1ebfu, \u0111\u00e2y kh\u00f4ng ph\u1ea3i m\u1ed9t s\u1ed1 nguy\u00ean d\u01b0\u01a1ng hay m\u1ed9t s\u1ed1 nguy\u00ean \u00e2m.\u00a0<\/span><\/p>\n

S\u1ed1 0 l\u00e0 s\u1ed1 nguy\u00ean n\u1eb1m gi\u1eefa hai s\u1ed1 -1 v\u00e0 1. S\u1ed1 0 l\u00e0 ch\u1eef s\u1ed1 cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c t\u1ea1o ra trong h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng, c\u00e1c quy lu\u1eadt s\u1ed1. Kh\u00f4ng c\u00f3 m\u1eb7t trong nhi\u1ec1u h\u1ec7 th\u1ed1ng s\u1ed1 c\u1ed5 m\u00e0 s\u1ed1 0 \u0111\u00e3 \u0111\u01b0\u1ee3c thay b\u1eb1ng m\u1ed9t k\u00fd hi\u1ec7u r\u1ea5t kh\u00e1c hay l\u00e0 m\u1ed9t ch\u1ed7 tr\u1ed1ng v\u1edbi c\u00e1c s\u1ed1 \u0111\u1ebfm.<\/span><\/p>\n

Theo c\u00e1c quan ni\u1ec7m tri\u1ebft h\u1ecdc, s\u1ed1 0 l\u00e0 s\u1ed1 \u0111\u1ea1i bi\u1ec3u cho h\u00e0m s\u1ed1 si\u00eau h\u00ecnh h\u1ecdc. \u0110\u00e2y l\u00e0 s\u1ed1 v\u0129nh vi\u1ec5n ch\u1eb3ng c\u00e1ch n\u00e0o \u0111\u1ea1t t\u1edbi, nh\u01b0ng l\u1ea1i kh\u00f4ng h\u1ea1n ch\u1ebf d\u1ef1a g\u1ea7n n\u00f3. \u0110\u00e2y l\u00e0 \u0111i\u1ec3m t\u1ee5 h\u1ee3p t\u01b0\u01a1ng quan v\u1ed1n c\u00f3, s\u1ed1 0 l\u00e0 \u0111i\u1ec3m xu\u1ea5t ph\u00e1t t\u01b0\u01a1ng quan v\u1ed1n c\u00f3. Nh\u01b0ng b\u1ea3n th\u00e2n s\u1ed1 0 n\u00e0y v\u1eabn kh\u00f4ng \u0111\u1ee7 n\u1ed9i dung hay quy \u0111\u1ecbnh n\u00e0o. \u0110\u00e2y l\u00e0 b\u1ea3n ch\u1ea5t \u0111\u1eb7c bi\u1ec7t c\u1ee7a con s\u1ed1 0, c\u0169ng l\u00e0 b\u1ea3n ch\u1ea5t s\u1edf h\u1eefu si\u00eau h\u00ecnh h\u1ecdc.<\/span><\/p>\n

Hy v\u1ecdng v\u1edbi nh\u1eefng th\u00f4ng tin m\u00e0 Ben Computer cung c\u1ea5p \u1edf tr\u00ean \u0111\u00e2y, b\u1ea1n \u0111\u00e3 c\u00f3 th\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n s\u1ed1 0 l\u00e0 s\u1ed1 g\u00ec, \u00fd ngh\u0129a c\u1ee7a s\u1ed1 0 trong to\u00e1n h\u1ecdc l\u00e0 g\u00ec. N\u1ebfu c\u00f3 b\u1ea5t c\u1ee9 th\u1eafc m\u1eafc n\u00e0o c\u1ea7n t\u01b0 v\u1ea5n, b\u1ea1n c\u00f3 th\u1ec3 comment xu\u1ed1ng b\u00ean d\u01b0\u1edbi \u0111\u1ec3 c\u00f9ng Ben Computer th\u1ea3o lu\u1eadn nh\u00e9!<\/p>\n","protected":false},"excerpt":{"rendered":"

S\u1ed1 0 l\u00e0 s\u1ed1 g\u00ec ch\u1eafc h\u1eb3n v\u1eabn \u0111ang l\u00e0 th\u1eafc m\u1eafc c\u1ee7a r\u1ea5t nhi\u1ec1u ng\u01b0\u1eddi hi\u1ec7n nay. S\u1ed1 0 l\u00e0 s\u1ed1 ch\u1eb5n hay l\u1ebb? \u0110\u00e2y l\u00e0 c\u00e2u h\u1ecfi g\u00e2y r\u1ea5t nhi\u1ec1u tranh c\u00e3i trong th\u1eddi gian g\u1ea7n \u0111\u00e2y. N\u1ebfu b\u1ea1n c\u0169ng \u0111ang \u0111i t\u00ecm l\u1eddi gi\u1ea3i \u0111\u00e1p cho c\u00e2u h\u1ecfi n\u00e0y th\u00ec \u0111\u1eebng b\u1ecf […]<\/p>\n","protected":false},"author":26,"featured_media":43407,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[45],"tags":[],"class_list":["post-43405","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-wiki"],"_links":{"self":[{"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/posts\/43405","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/comments?post=43405"}],"version-history":[{"count":8,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/posts\/43405\/revisions"}],"predecessor-version":[{"id":45324,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/posts\/43405\/revisions\/45324"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/media\/43407"}],"wp:attachment":[{"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/media?parent=43405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/categories?post=43405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ben.com.vn\/tin-tuc\/wp-json\/wp\/v2\/tags?post=43405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}