Question

-4 2 5 5 -5 Find (if possible) a. AB and b. BA, if A = 2 - 5 B = 4 4 - 2 0 3 a. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. AB = (Simplify your answers.) OB. This matrix operation is not possible. b. Select the correct choice below and, if necessary, fill in the answer boxes to complete your choice. O A. BA= (Simplify your answers.) B. This matrix operation is not possible.

Answer 1

As 4. 2 S 5 S 2 -S 9 3 0 order (A) order (B) 2X3 3X2 기 1 No. of Column 3x? No. of Yow AB = Order (A) x order). (3X2) X(2X3) =(3x3) (AB) community location) possible 4 2 5 5 -5 AB= 2 -2 o 3 20 +8 - 20 + 8 20-4 AB = To-20 ܘܐ- ܒܐ -lo tlo 0 +12 o +12 0 -6 -12 -12 16 A B = -lo -lo option A currect. 12 12 Checking multiplication of (BA) order (B) x order (A) =12x3) X (3X2) = 2x2.* Multiplication possible order(AB) = 2X2 BA 2 (1 2:1-13 -5 3 1-20 tloto 10-25 BA - -16 +8+o 8 -20 - 6 -10 BA- -30 -] f option A is currect. - 8 -18