Seonglae ChoMatrix composed with 3 axis unit vectors x, y, z’s inverse matrix is an Identity matrix
But
I felt weird and realized it is different from normal matrix multiplication
- why vector is in matrix?
- why use dot product instead of number multiplication? Is it valid?
곱할때 Transpose 앞뒤적용할 지 선택할 때 일단 행렬크기 먼저 고려하고 더하고 옆에 빼는 다른 항의
그다음 크기가 작은 결과 행렬을 선택하여 계산하는 것이 좋다
보통 앞의 것 transpose
Diverse Attributes
Transpose
In linear algebra, the transpose of a matrix is an operator which flips a matrix over its diagonal;
that is, it switches the row and column indices of the matrix A by producing another matrix, often denoted by AT.
https://en.wikipedia.org/wiki/Transpose
www.gatsby.ucl.ac.uk
http://www.gatsby.ucl.ac.uk/teaching/courses/sntn/sntn-2017/resources/Matrix_derivatives_cribsheet.pdf