SOLUTION: Please help. I have been working this problem for three days and keep getting different answers. My downfall is the signs, I think.
Use Cramer's Rule to solve the linear system
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-> SOLUTION: Please help. I have been working this problem for three days and keep getting different answers. My downfall is the signs, I think.
Use Cramer's Rule to solve the linear system
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Question 83015: Please help. I have been working this problem for three days and keep getting different answers. My downfall is the signs, I think.
Use Cramer's Rule to solve the linear system
4x + 3y - z = 12
x - 3y + 3z = 14
3x + y + z = 18
I know that D = 4 3 -1
1 -3 3
3 1 1
Dx= 12 3 -1
14 -3 3
18 1 1
Dy= 4 12 -1
1 14 3
3 18 1
I understand how to proceed but the signs are giving me a headache. I am at the point that I just want to view the right answer in its entirity to see where I am going wrong. Thanks in advance. Answer by scott8148(5895) (Show Source):
