Hi, I've been trying to solve this for over an hour now by extending the method of elimination like the textbook says. Very frustrated.
Please help.
Solve each systems. Express the solution in the form (x,y,z,w).
x+y+z-w=5
2x+y-z+w=3
x-2y+3z+w=18
-x-y+z+2w=8
The answer is (2,1,5,3)
I don't know how to get there.
Oh no, you wrote down the problem wrong
The R4 is . It's +2w.
But I think I kind of get what to do now. Let me work on this problem first thing in the morning tomorrow. My head hurts from studying Logic for another class right now....
Thank you so much. When I saw that you replied, I screamed like I won a lottery or something. I appreciate your kindness very much.
P.S. I studied Math for 6 hours today ...