Asked by Anonymous

Can somebody show I how to use matrices to solve the following. I want to solve for Tab first. I wiill ask 9n other part later. It given Tad =1200.

.285Tab-.428Tac=0
-.428Tab-.285Tac+.384Tad=0
-0.857Tab-.857Tac+.923Tad=0

Anonymous
15 hours ago
No need for matrices, since all these linear combinations just add to zero.
If AX = 0 (all matrices) then X=0
Or, using Cramer's rule, since all the numerators have a zero column, they are all zero.

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oobleck
11 hours ago
I don't know what that is . I plug in Tad=1200 and I get
eq1) 285Tab-.428Tac=0
eq2) -.428Tab-.285Tac+460.8=0
eq3) -0.857Tab-.857Tac+1107.6=0
Now how do I use eq1 and eq2 to to solve for Tab and Tac?
Answered by Anonymous
Google Gauss Jordan calculator
Answered by Anonymous
You know the answer already, but the calculator will get you through the steps.
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