First slide

Operations of matrix

Question

If $A = [\begin{array}{lll} a^{2} a b a c \\ a b b^{2} b c \\ a c b c c^{2} \end{array}]$ and $B = [\begin{array}{ccc} 0 & c & - b \\ - c & 0 & a \\ b & - a & 0 \end{array}]$ then the product AB is equal to

Easy

A

O
B

A
C

B
D

I

Solution

We have
$A B = [\begin{array}{ccc} 0 - a b c + a b c & a^{2} c + 0 - a^{2} c & - a^{2} b + a^{2} b + 0 \\ 0 - b^{2} c + b^{2} c & a b c + 0 - a b c & - a b^{2} + a b^{2} + 0 \\ 0 - b c^{2} + b c^{2} & a c^{2} + 0 - a c^{2} & - a b c + a b c + 0 \end{array}] = O$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App