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If A = [ a,b] , B = [ - b, -a] and C = ...

If A = [ a,b] , B = [ - b, -a] and ` C = [ overset(a) underset(-a).]` then the correct statement is

A

A = -A

B

A + B = A-B

C

AC = BC

D

CA = CB

Text Solution

Verified by Experts

The correct Answer is:
A
we have,
` A = [a,b] B= [-b,-a] and C = [underset(-a)a]`
`AC= [a,b] [underset(-a)a]= [a^(2)-ab]`
` BC= [-b,-a] [overset(a)-a] = [ -ab+a^(2)]`
Hence, AC=BC
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