사상
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgMqxtqsBCwsVxDTBGjB_5MSVGxageIQQAzc3xpNh_H1lkvtSNj14ypQW9PrjM5d-RTpy3ALoHgzX12GoKgD5Ny6P7VVf2VkcG6MtmSpHgFN7tDbmKnXJp6tC5tu5ChuidnjJhjcKZC5R4/s1600/Note+Jul+13%252C+2020.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhv-T-_mSy357ScRlkN5fvkva3Omt4tf8Pt0Bx_n_j3AfzRzxmdDxXjQCpPfRVsKZhhJmlyN35EVSUCxnIyXYe8PquQSyipyUkWklG7oFCUgrqsuaXvMZBAZNa_di9oULs8WSyyoQPoWi0/s1878/Page1.jpg)
역사상
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjGq-oK1ALsgd5yA_lAgbaQMLdi8YsdqMA0guai5xO8Sp81GhwCnwvh91GIbV-knu5NCFA4aICOpYRznJiMc3N8KXXluKGj2PSihS7WGW4MSsFE9-eRL5utA8rApSecu_mCmBdtgDxu2Og/s1600/Page1-1.png)
선형사상
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjx0iOuSbxKEyStPTzmNHnFoJvq1b9LtLuU3Bo0GezULaA4jAyZPiEqciHA6eKAFA855TepP1cLeKWEOHFPSIzSkiWzSidhL0fD_ZO65u8_Ech4ZbhdWi63BrwQsbNcD5afDpu5m7y4hD4/s1600/Page1-2.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgNQxJPcEjhBNUcK5OWATf_FCUGPwKopVvMgmjuWCS-YJmSjN1dA4aCJdm8a_9HfeSd-I4PfxfUcd4WFnEdHkvVtEQgp2tL4cspzkTtAbzCTRzZxJhD3PWXKMU6mrktDDHjCKd2v-OyusI/s1879/Page2111.png)
행렬
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi6gW-TYdYZ4Z-KtclREGw7qQgMdJRxdwsldsrKQOpr5zGzTqtEGMKAejh0TPxP3F20DUAl_a7RnVNI5hzdf5shgM2cI2CjH0yWquZ8T4jEll1Pqbn7SCcmuzJQwoyK3SYWrKMxoGT7Yq0/s977/Page111.png)
행렬의 곱
두 행렬을 곱할 때는 좌측 행렬의 열 수과 우측 행렬의 행 수가 같아야 한다.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgi5VVCKlf9e3I-3FFaXaZrkEYTnXR2dMGK5J_raxGX9qNGiwVjGfU4zGSCmIkgZLViQ2D4v3kZjOIy353DiwES7xqMBqr4FsuqOiI-8m5W-NNQjdheBVV8iKVMc3UAXHAeLMvIi_RZlmU/s1687/Page112.png)
단위행렬
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi095D7xQvSrCHTaJTG9CCuHaJ0QAoXOdWsixahGS6ZSZyjHWXT64zgCvjPVqapjHQprkhz98GWum_l5abvM7JU7I63UsMBamhVk01JRGm6TcwKTiu7XXT3Icu1AtbICLrfs-Hh2PrQlaE/s960/Page222.png)
역행렬
한 행렬과 곱하여 단위행렬을 만드는 행렬을 역행렬이라고 한다.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhWyVxDc8xsVuvYEdt6P2DYLigUwMLDyKwC9aJhu6DMg6v17j_S3GAoUDdfWqPPQYLASZriGaytUKEAWXWYUMD5yl7OXqynXse6mYZiW6wHuO16aLVDuNhUGvzvKN53mHlkGH78sd4KGSA/s1600/Page223.png)
가우스 소거법으로 역행렬 구하기
다음은 일반적인 2차 연립 방정식의 해를 구하는 순서다.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjqWaKEauwkx1bY9ByBur0btL3jrpFi6WUSY7E-fFuTPcxmyP_52M-01YNJ-V6h2KU6GGSMfkFRj7AQrgokTEuCvmI2EoU5ZDjSFpjhSPa8i3iiBkf9G_R1PgD1mCLbkCpWMfD-347lNzc/s2048/Page3333.png)
이를 이용해 가우스 소거법으로 보다 간략하게 역행렬을 구할 수 있다.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjEVpkr9JhTnE94wZFQq1z4WWvrAwWEoXQN9Y13EFcTB7S6YAl4kyEjMqTbR9kmcnTbh9fWPAuJHUU9hoUQiz4Dq_GOQg6YtmezRn02Splo_36rtLjS6xyvWuDUOCC-x2M65Ygbg_2mheg/s1513/Page4333.png)
행렬식
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi5UbfeEeukmo3WvUP5pGycwIqRcVMzIHkfvy8zVuGt7jjOm4U_VdSOJLG-G6Pi7fnTjwm4LOwgOChgek783Sv0aGIS9It825LCTxblI1a6GVaAIdhvYVbVJ5C0CMrFrU_zM3RwwvJPKDg/s1879/Page4.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgy72ZqX3hsjTLYgC10eEJtme7GdhLLrAk1rPGg2K9jz-0UpZGTcV7oscFE5pxzZxWxzmstKKXV5sYd8hVKtqpk9nCvqoKu-CIAS_Ye2h8u5tpUUu1ZGk_MLwhXHFSLvoujJmGej8__vw/s1879/Page5.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgDcBw6-a6Bz2xcCxFleYfRKYmHz_sJnpofUO2AHGGaN30r7zF21DGM5wAczoq1zccYxHO00lm8VgOCe1LbjFwSEhPs2HzLO9N4Bby0g9TM1wjWDfa8KhB_UYH_z4ykmvvHE9m2hHvDjSE/s2048/Page6.png)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi_BMw76dAsUmjjYeWBVFYb2UN-8pEcLXCDhLnZpUSPYaDaUTOilL1GhxIgax8K2J5LkiEKJm8XCdFku0JbjrhvrTzefFBHWCDGGXg-1EoVtL1WdMW-0Oaro5rTRrSjCIUKJDS5Ac8hbcw/s2048/Page7.png)
3 댓글
👍
답글삭제공부한 후에 요약노트를 스캔해서 올려놓으셨네요. 저도 해봐야 겠네요. 필요할 때 찾아보기 편하겠다.
답글삭제아이패드로 작성했습니다. 말씀대로 필요할 때 찾아보기 아주 좋아요!
삭제