June 2024
Beginner to intermediate
352 pages
9h 29m
Korean
Content preview from 개발자를 위한 필수 수학
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160
개발자를 위한 필수 수학
매우 큰 희소 행렬의 경우에는 희소 함수를 사용해 이런 행렬을 만듭니다.
4.6
연립 방정식과 역행렬
선형대수학의 기본적인 사용 사례는 연립 방정식을 푸는 것입니다. 역행렬을 배우기에도 좋은
예입니다. 다음과 같은 방정식이 주어졌을 때
x
,
y
,
z
의 해를 구해야 한다고 가정해봅시다.
4 2 4 44
5 3 7 56
9 3 6 72
xyz
xyz
xyz
++=
++=
++=
세 개의 변수를 분리하기 위해 다양한 대수 연산을 직접 실험해볼 수 있습니다. 하지만 컴퓨터
로 이 문제를 풀려면 다음과 같이 행렬로 표현해야 합니다. 계수는 행렬
A
로, 방정식의 오른쪽
에 있는 값은 행렬
B
로, 미지의 변수는 행렬
X
로 추출합니다.
7
424
537
936
44
56
72
A
B
x
Xy
z
=
=
=
선형 연립 방정식의 함수는
AX
=
B
입니다. 행렬
X
를 행렬
A
로 변환해 행렬
B
를 만들어야 합
니다.
424 44
5 3 7 56
9 3 6 72
AX B
x
y
z
=
×=
7
옮긴이_ 종종 벡터를 열이
1
개인 행렬로 표현합니다.
161
4
장
선형대수학
A
의 변환을 취소해야
X
를 고립시키고
x
,
y
,
z
의 값을 구할 수 있습니다.
A
의 변환을 취소하는
방법은 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.