H Hawk Oct 2019 8 0 planet earth Oct 29, 2019 #1 Hello everyone, Does anyone know how to put in variables in matrices using calculator Texas TI-82. I am trying to solve Ax=b for some unknown X variables. When I put the unknown variables as X1,X2 etc. they will immediately become zero. Regards

Hello everyone, Does anyone know how to put in variables in matrices using calculator Texas TI-82. I am trying to solve Ax=b for some unknown X variables. When I put the unknown variables as X1,X2 etc. they will immediately become zero. Regards