Omnipotent Data
The book club is here! !
Created a book friend group, the group number is: 7-0-6-8-0-0-5-8-9
There will be a problem when joining a group, and the problem is below.
Well... everyone, please listen to the question! It's time to test whether you are a top student!
………………
Here is a system of homogeneous linear equations
X1+X2+2X3-X4=0
2X1+X2+X3-X4=0
2X1+2X2+X3+2X4=0
The rank of the coefficient matrix of this equation system is the answer to the group! !
Welcome everyone to join the top academic exchange group! ! Warm welcome! !
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