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gjhfdfg
 one year ago
Best ResponseYou've already chosen the best response.0I 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?

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

tyteen4a03
 one year ago
Best ResponseYou've already chosen the best response.0Did you define a and b?

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

tyteen4a03
 one year ago
Best ResponseYou've already chosen the best response.0What is the error message?

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

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

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

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

phi
 one year ago
Best ResponseYou've already chosen the best response.1I 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...

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

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

phi
 one year ago
Best ResponseYou've already chosen the best response.1I 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)

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