Use Cramer's rule to solve
x1 + x2 - x3 = 1
x1 + x2 + x3 = 2
x1 - x2 = 3
To skip to the end..
Unique solutions:
x1 = 9/4
x2 = -3/4
x3 = 1/2
Are these answers right?
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Use Cramer's rule to solve
x1 + x2 - x3 = 1
x1 + x2 + x3 = 2
x1 - x2 = 3
To skip to the end..
Unique solutions:
x1 = 9/4
x2 = -3/4
x3 = 1/2
Are these answers right?
yes,those are right,but next time try substituting the values of x1,x2,x3 (or any other variables) into the first equations to check if the solution you got is correct.