2x2 ์—ญํ–‰๋ ฌ - [Linear Algebra] Lecture 20

์—ญํ–‰๋ ฌ 2x2 ์—ญํ–‰๋ ฌ, ์—ญํ–‰๋ ฌ

์—ญํ–‰๋ ฌ 2x2 2X2 3X3

์—ญํ–‰๋ ฌ 2x2 How to

์—ญํ–‰๋ ฌ 2x2 2X2 ํ–‰๋ ฌ์˜

9. ์—ญํ–‰๋ ฌ(Inverse Matrix) ๊ตฌํ•˜๊ธฐ : ๋„ค์ด๋ฒ„ ๋ธ”๋กœ๊ทธ

์—ญํ–‰๋ ฌ 2x2 How to

์—ญํ–‰๋ ฌ 2x2 Trace of

์—ญํ–‰๋ ฌ 2x2 ์—ญํ–‰๋ ฌ, ์—ญํ–‰๋ ฌ

์—ญํ–‰๋ ฌ 2x2 ์—ญํ–‰๋ ฌ, ์—ญํ–‰๋ ฌ

์—ญํ–‰๋ ฌ 2x2 How to

์—ญํ–‰๋ ฌ 2x2 How to

[Linear Algebra] Lecture 20

3x3์ธ ๊ฒฝ์šฐ์—” ์–ด๋–จ์ง€ ํ™•์ธํ•ด๋ณด์ž.

  • ํ–‰๋ ฌ์ด๋‹ˆ๊นŒ ์—ญํ–‰๋ ฌ์„ ์ด์šฉํ•ด์„œ x, y๋ฅผ ๊ตฌํ•  ์ˆ˜ ์žˆ๊ฒ ์ฃ ? ์™œ๋ƒํ•˜๋ฉด determinant์˜ ๊ณ„์‚ฐ์—๋Š” A์˜ ๋ชจ๋“  ์›์†Œ์˜ ๊ฐ’์ด ์˜ํ–ฅ์„ ์ฃผ๊ณ  ์žˆ์œผ๋ฉฐ, ์ด determinant๋กœ ์—ฌ์ธ์ˆ˜ ํ–‰๋ ฌ cofactor matrix ์˜ ๋ชจ๋“  ์›์†Œ๋ฅผ ๋‚˜๋ˆ„์–ด ์—ญํ–‰๋ ฌ์„ ๊ณ„์‚ฐํ•˜๊ธฐ ๋•Œ๋ฌธ์ด๋‹ค.

  • ์ด์ „ ๊ธ€์— ์„ค๋ช…ํ•œ ์šฐํšŒ์ „ํ•˜๋Š” ํ–‰๋ ฌ์€ ๋‹ค์Œ๊ณผ ๊ฐ™๋‹ค.

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