SOLUTION: How do I multiply: 2EA E=[1, 2] a=[3, 0, 2, -1]

Algebra ->  Matrices-and-determiminant -> SOLUTION: How do I multiply: 2EA E=[1, 2] a=[3, 0, 2, -1]      Log On


   

Question 176529: How do I multiply: 2EA E=[1, 2] a=[3, 0, 2, -1]
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
2EA: I am going to assume the A is a 2x2 matrix because in order for E which is a 1x2 matrix, to be multiplied by another matrix, the other matrix rows must be 2
:
2%28matrix%281%2C2%2C1%2C2%29%29=%28matrix%281%2C2%2C2%2C4%29%29%28matrix%282%2C2%2C3%2C0%2C2%2C-1%29%29=%28matrix%281%2C2%2C-2%2C-4%29%29