gaussian elimination

數學神童

在matrix里面，什么是gaussian elimination 和cramer's rule?

noob1988

2个都是用来找x y z

gaussian elimination是用row operation...的
http://en.wikipedia.org/wiki/Gaussian_elimination



cramer's rule
最简单是这个

The rules for 3×3 are similar. Given which in matrix format is the values of x, y and z can be found as follows:
http://en.wikipedia.org/wiki/Cramer%27s_rule


还有除了这个cramer'rule...
还可以这样用...