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Find 1/2(A+Aprime)and 1/2(A-Aprime), whe...

Find `1/2(A+Aprime)`and `1/2(A-Aprime)`, when `A=[0a b-a0c-b-c0]`

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The correct Answer is:
N/a
`A=[{:(0,a,b),(-a,0,c),(-b,-c,0):}].`
`implies A'=[{:(0,a,b),(-a,0,c),(-b,-c,0):}]=[{:(0,-a,-b),(a,0,-c),(b,c,o):}]`
`therefore A+A'=[{:(0,a,b),(-a,0,c),(-b,-c,0):}]=[{:(0,-a,-b),(a ,0,-c),(b,c,0):}]`
`=[{:(0,0,0),(0,0,0),(0,0,0):}]`
`implies (1)/(2)(A+A')=[{:(0,0,0),(0,0,0),(0,0,0):}]`
`and A-A'=[{:(0,a,b),(-a,0,c),(-b,-c,0):}]-[{:(0,-a,-b),(a,0,-c),(b,c,0):}]`
`=[{:(0,2a,2b),(-2a,0,2C),(-2b,-2c,0):}]`
`implies(1)/(2)(A-A')=[{:(0,a,b),(-a,0,C),(-b,-c,0):}]`
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