Do exist a command to convert group of linear equations into a matrix expression ? , like: 3*A+2*B+5*C=0 2*A+8*B+7*C=0 5*A+1*B+12*C=0 into |3 2 5 | |A| |0| |2 8 7 | |B|=|0| |5 1 12| |C| |0| alexandre