{"id":946,"date":"2025-10-30T17:27:52","date_gmt":"2025-10-30T17:27:52","guid":{"rendered":"https:\/\/ykim.synology.me\/wordpress\/?p=946"},"modified":"2025-10-31T14:50:23","modified_gmt":"2025-10-31T14:50:23","slug":"%ed%96%89%eb%a0%ac%ec%9d%84_%ec%82%ac%ec%9a%a9%ed%95%98%ec%97%ac_%ec%84%a0%ed%98%95_%ec%97%b0%eb%a6%bd_%eb%b0%a9%ec%a0%95%ec%8b%9d%ec%9d%98_%ed%95%b4%eb%a5%bc_%ea%b5%ac%ed%95%98%eb%8a%94_%ec%98%88","status":"publish","type":"post","link":"https:\/\/ykim.synology.me\/wordpress\/%ed%96%89%eb%a0%ac%ec%9d%84_%ec%82%ac%ec%9a%a9%ed%95%98%ec%97%ac_%ec%84%a0%ed%98%95_%ec%97%b0%eb%a6%bd_%eb%b0%a9%ec%a0%95%ec%8b%9d%ec%9d%98_%ed%95%b4%eb%a5%bc_%ea%b5%ac%ed%95%98%eb%8a%94_%ec%98%88-946\/","title":{"rendered":"\ud589\ub82c\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc120\ud615 \uc5f0\ub9bd \ubc29\uc815\uc2dd\uc758 \ud574\ub97c \uad6c\ud558\ub294 \uc608\uc2dc"},"content":{"rendered":"\n

\ud589\ub82c Marix, \ud589\ub82c\uc2dd Determinant, \uc120\ud615\uc5f0\ub9bd\ubc29\uc801\uc2dd Linear Algebra System, \ud574 Solution<\/p>\n\n\n\n

\n\n\n\n

\ud589\ub82c\uc2dd(determinant)\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc120\ud615 \uc5f0\ub9bd \ubc29\uc815\uc2dd\uc744 \ud478\ub294 \ubc29\ubc95\uc740 **\ud06c\ub77c\uba54\ub974 \uacf5\uc2dd (Cramer’s Rule)**\uc774\ub77c\uace0 \ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\ubb38\uc81c<\/strong><\/p>\n\n\n\n

\ub2e4\uc74c \uc5f0\ub9bd \ubc29\uc815\uc2dd\uc744 \ud478\uc2dc\uc624.<\/p>\n\n\n\n

[katex display=true]\\Large \\begin{cases} 2x + 3y = 8 \\\\ x + y = 3 \\end{cases}[\/katex]<\/p>\n\n\n\n

\n\n\n\n

1\ub2e8\uacc4: \ud589\ub82c \ud3fc\uc73c\ub85c \ubcc0\ud658<\/h3>\n\n\n\n

\uc774 \uc2dc\uc2a4\ud15c\uc744 [katex]\\Large AX = B[\/katex] \ud615\ud0dc\ub85c \ubcc0\ud658\ud569\ub2c8\ub2e4. \uc5ec\uae30\uc11c [katex]\\Large A[\/katex]\ub294 \uacc4\uc218 \ud589\ub82c, [katex]\\Large X[\/katex]\ub294 \ubcc0\uc218 \ubca1\ud130, [katex]\\Large B[\/katex]\ub294 \uc0c1\uc218 \ubca1\ud130\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large \\begin{pmatrix} 2 & 3 \\\\ 1 & 1 \\end{pmatrix} \\begin{pmatrix} x \\\\ y \\end{pmatrix} = \\begin{pmatrix} 8 \\\\ 3 \\end{pmatrix}[\/katex]<\/p>\n\n\n\n

2\ub2e8\uacc4: \ud06c\ub77c\uba54\ub974 \uacf5\uc2dd<\/h3>\n\n\n\n

\ud06c\ub77c\uba54\ub974 \uacf5\uc2dd\uc5d0 \ub530\ub974\uba74 [katex]\\Large x[\/katex]\uc640 [katex]\\Large y[\/katex]\uc758 \ud574\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large x = \\frac{\\det(A_x)}{\\det(A)} \\quad \\text{\uadf8\ub9ac\uace0} \\quad y = \\frac{\\det(A_y)}{\\det(A)}[\/katex]<\/p>\n\n\n\n

3\ub2e8\uacc4: \uac01 \ud589\ub82c \uc815\uc758\ud558\uae30<\/h3>\n\n\n\n

\uc5ec\uae30\uc11c [katex]\\Large A[\/katex]\ub294 \uae30\ubcf8 \uacc4\uc218 \ud589\ub82c\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large A = \\begin{pmatrix} 2 & 3 \\\\ 1 & 1 \\end{pmatrix}[\/katex]<\/p>\n\n\n\n

[katex]\\Large A_x[\/katex]\ub294 [katex]\\Large A[\/katex]\uc758 \uccab \ubc88\uc9f8 \uc5f4(x\uc758 \uacc4\uc218)\uc744 \uc0c1\uc218 \ubca1\ud130 [katex]\\Large B[\/katex]\ub85c \ub300\uccb4\ud55c \ud589\ub82c\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large A_x = \\begin{pmatrix} 8 & 3 \\\\ 3 & 1 \\end{pmatrix}[\/katex]<\/p>\n\n\n\n

[katex]\\Large A_y[\/katex]\ub294 [katex]\\Large A[\/katex]\uc758 \ub450 \ubc88\uc9f8 \uc5f4(y\uc758 \uacc4\uc218)\uc744 \uc0c1\uc218 \ubca1\ud130 [katex]\\Large B[\/katex]\ub85c \ub300\uccb4\ud55c \ud589\ub82c\uc785\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large A_y = \\begin{pmatrix} 2 & 8 \\\\ 1 & 3 \\end{pmatrix}[\/katex]<\/p>\n\n\n\n

4\ub2e8\uacc4: \uac01 \ud589\ub82c\uc758 \ud589\ub82c\uc2dd(Determinant) \uacc4\uc0b0<\/h3>\n\n\n\n

2×2 \ud589\ub82c\uc758 \ud589\ub82c\uc2dd \uacf5\uc2dd\uc778 [katex]\\Large ad – bc[\/katex]\ub97c \uc774\uc6a9\ud574 \uacc4\uc0b0\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

\uae30\ubcf8 \ud589\ub82c\uc2dd [katex]\\Large \\det(A)[\/katex]\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large \\det(A) = (2)(1) – (3)(1) = 2 – 3 = -1[\/katex]<\/p>\n\n\n\n

[katex]\\Large x[\/katex]\ub97c \uad6c\ud558\uae30 \uc704\ud55c \ud589\ub82c\uc2dd [katex]\\Large \\det(A_x)[\/katex]\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large \\det(A_x) = (8)(1) – (3)(3) = 8 – 9 = -1[\/katex]<\/p>\n\n\n\n

[katex]\\Large y[\/katex]\ub97c \uad6c\ud558\uae30 \uc704\ud55c \ud589\ub82c\uc2dd [katex]\\Large \\det(A_y)[\/katex]\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large \\det(A_y) = (2)(3) – (8)(1) = 6 – 8 = -2[\/katex]<\/p>\n\n\n\n

5\ub2e8\uacc4: \ud574 \uad6c\ud558\uae30<\/h3>\n\n\n\n

\uc774\uc81c \ud06c\ub77c\uba54\ub974 \uacf5\uc2dd\uc744 \uc0ac\uc6a9\ud558\uc5ec [katex]\\Large x[\/katex]\uc640 [katex]\\Large y[\/katex]\ub97c \uad6c\ud569\ub2c8\ub2e4.<\/p>\n\n\n\n

[katex display=true]\\Large x = \\frac{\\det(A_x)}{\\det(A)} = \\frac{-1}{-1} = 1[\/katex]<\/p>\n\n\n\n

[katex display=true]\\Large y = \\frac{\\det(A_y)}{\\det(A)} = \\frac{-2}{-1} = 2[\/katex]<\/p>\n\n\n\n

\uacb0\ub860<\/h3>\n\n\n\n

\ub530\ub77c\uc11c \uc774 \uc5f0\ub9bd \ubc29\uc815\uc2dd\uc758 \ud574\ub294 [katex]\\Large x = 1[\/katex], [katex]\\Large y = 2[\/katex] \uc785\ub2c8\ub2e4.<\/p>\n

<\/div>
<\/div>","protected":false},"excerpt":{"rendered":"

\ud589\ub82c Marix, \ud589\ub82c\uc2dd Determinant, \uc120\ud615\uc5f0\ub9bd\ubc29\uc801\uc2dd Linear Algebra System, \ud574 Solution \ud589\ub82c\uc2dd(determinant)\uc744 \uc0ac\uc6a9\ud558\uc5ec \uc120\ud615 \uc5f0\ub9bd \ubc29\uc815\uc2dd\uc744 \ud478\ub294 \ubc29\ubc95\uc740 **\ud06c\ub77c\uba54\ub974 \uacf5\uc2dd (Cramer’s Rule)**\uc774\ub77c\uace0 \ud569\ub2c8\ub2e4. \ubb38\uc81c \ub2e4\uc74c \uc5f0\ub9bd \ubc29\uc815\uc2dd\uc744 \ud478\uc2dc\uc624. [katex display=true]\\Large \\begin{cases} 2x + 3y = 8 \\\\ x + y = 3 \\end{cases}[\/katex] 1\ub2e8\uacc4: \ud589\ub82c \ud3fc\uc73c\ub85c \ubcc0\ud658 \uc774 \uc2dc\uc2a4\ud15c\uc744 [katex]\\Large AX = B[\/katex] \ud615\ud0dc\ub85c \ubcc0\ud658\ud569\ub2c8\ub2e4. \uc5ec\uae30\uc11c…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_kadence_starter_templates_imported_post":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","yasr_overall_rating":0,"yasr_post_is_review":"","yasr_auto_insert_disabled":"","yasr_review_type":"","fifu_image_url":"","fifu_image_alt":"","iawp_total_views":0,"footnotes":""},"categories":[69],"tags":[],"class_list":["post-946","post","type-post","status-publish","format-standard","hentry","category-education-slug"],"yasr_visitor_votes":{"stars_attributes":{"read_only":false,"span_bottom":false},"number_of_votes":0,"sum_votes":0},"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/posts\/946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/comments?post=946"}],"version-history":[{"count":28,"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/posts\/946\/revisions"}],"predecessor-version":[{"id":990,"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/posts\/946\/revisions\/990"}],"wp:attachment":[{"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/media?parent=946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/categories?post=946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ykim.synology.me\/wordpress\/wp-json\/wp\/v2\/tags?post=946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}