1. when a matrix is given and its inverse is asked for (along with 4 options) instead of solving the matrix to find the inverse, its much easier to multiply the matrix to the 4 options... AxAInverse=1 there is no need to multiply entirely...if u get some number which is not 1 in a11 stop and goto next option or else continue 2.similarly when 3 equations are to be solved using matrices and options r given best way is to substitute values of x,y,z.....
Sometimes One Dream Is Enough To Light Up The Entire October Sky....
First Year Mechanical Engineering
Veermata Jijabai Technological Institute