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If A=" diag "(1,-1,2)"B = diag "(2,3,-1)...

If `A=" diag "(1,-1,2)"B = diag "(2,3,-1)` then `3A+4B=`

A

`" diag "(11,9,2)`

B

`" diag "(11,9,-2)`

C

`" diag "(11,-9,2)`

D

`" diag "(11,-9,-2)`

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AAKASH SERIES-MATRICES -ALGEBRA OF MATRICES -EXERCISE - I
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