hey guys- these type of questions I dont even know where to begin..
Suppose a 3 x 3 matrix A can be transofrmed into a 3 x 3 matrix B by the following row operations;
R2 = R2 - 2R1 , R2 <--> (interchange) R3 and R3 = 1/3 R3
and that E F and G are the corresponding elementary matrices
a) write down the matrices E F G and express B in terms of A E F G ??
B) if det(a) =/= 0 then find det(b)/det(a)
What does all that mean- I didn't understand a single word what that question or even the information was telling me....
can some one explain it to me and also do the working out thanks
I dont understand the question nor the information....
First I started off like this
A = ( a b c )
( d e f )
( g h i )
I applied all those row operations and then i completly lost it
Can someone explain to what is elementry matrix ? I tried wikipedia but still coudn't understand it and also what exactly does the question even mean....