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gjhfdfgBest ResponseYou've already chosen the best response.0
I have a matrix problem where I solve for X, the problem is 4X + A = B. I plugged my matrices into my calculator & typed 4x + a then pressed enter. Then it said error? Am I not doing this problem correctly?
 one year ago

gjhfdfgBest ResponseYou've already chosen the best response.0
Do I just subtract the 2 matrices from each other instead?
 one year ago

tyteen4a03Best ResponseYou've already chosen the best response.0
Did you define a and b?
 one year ago

gjhfdfgBest ResponseYou've already chosen the best response.0
Yes, a and b were already defined
 one year ago

tyteen4a03Best ResponseYou've already chosen the best response.0
What is the error message?
 one year ago

gjhfdfgBest ResponseYou've already chosen the best response.0
Just says error data type, 1.quit 2. go to
 one year ago

phiBest ResponseYou've already chosen the best response.1
matrix X is undefined, right ? I would try: enter matrix A and matrix B find BA divide that by 4 that should give you X
 one year ago

phiBest ResponseYou've already chosen the best response.1
If these are small matrices, (if all else fails) you can do this by hand BA means subtract corresponding elements
 one year ago

gjhfdfgBest ResponseYou've already chosen the best response.0
I got this from subtracting b & a, [5 3] [4 6] [5 0] & then I tried to divide that by 4 & it says error
 one year ago

phiBest ResponseYou've already chosen the best response.1
I don't know how your calculator works with matrices, but dividing a matrix by 4 means divide each of its elements by 4 (or multiply by 0.25) the first row would be 5/4 3/4 and so on...
 one year ago

gjhfdfgBest ResponseYou've already chosen the best response.0
Im using an ti84 plus if that helps... It usually solves my problems, I don't understand why the error message keeps popping up
 one year ago

gjhfdfgBest ResponseYou've already chosen the best response.0
But I got my answer, thank you for help once again.!
 one year ago

phiBest ResponseYou've already chosen the best response.1
I just looked at the manual, and it should work. It does want the 4 to be a value (not a matrix) did you try multiplying by 0.25 (just an experiment)
 one year ago

gjhfdfgBest ResponseYou've already chosen the best response.0
Yes, multiplying it by 0.25 worked. Just the 4 by itself didnt
 one year ago
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