Question 84386
find the inverse, if it exists,in the matrix. I am not sure and don't understand how to do the inverse. I used the underscore to separate the numbers within the matrix.
2_ 0_ 4
3_ 1_ 5
-1_1_-2
SEE THE FOLLOWING WORK 
1.FRAME AUGMENTED MATRIX ADDING UNIT MATRIX OF ORDER(3,3)
2.BY SERIES OF OPERATIONS INDICATED ,MAKE A AS UNIT MATRIX..
THEN RHS MATRIX BECOMES INVERSE.
	NR1=NEW ROW1…….R1=OLD ROW 1   ETC..					
	2	0	4	1	0	0
	3	1	5	0	1	0
	-1	1	-2	0	0	1
	NR1=R1/2……..NR2=R2-3R1/2……NR3=R3+R1/2………					
	1	0	2	0.5	0	0
	0	1	-1	-1.5	1	0
	0	1	0	0.5	0	1
	NR3=R3-R2					
	1	0	2	0.5	0	0
	0	1	-1	-1.5	1	0
	0	0	1	2	-1	1
	NR2=R2+R3………….NR1=R1-2R3					
	1	0	0	-3.5	2	-2
	0	1	0	0.5	0	1
	0	0	1	2	-1	1

	INVERSE IS 		
	-3.5	2	-2
	0.5	0	1
	2	-1	1

IF IN DOUBT PLEASE COME BACK