Subject: matrices Right now, we are dealing with matrices and we are supposed to solve the following problem on our graphingcalculators: a2b+3c5d=14 3a+4b2c+3d=19 5ab+6c+4d=5 I am a student. Hi,I think that what you are expected to do is to write the system of equations as a matrix equation. Let Then your system of equations can be written To solve this matrix equation you can multiply both sides, on the left, by A^{1}. That is But A^{1} A is the 4by4 identity matrix I and I X = X so Using your calculator, construct A and B, compute A^{1} and multiply to get A^{1}B. Cheers,Penny
