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If z = |{:(1 , 1 + 2i, - 5i),(1 - 2i,-3,...

If z = `|{:(1 , 1 + 2i, - 5i),(1 - 2i,-3,5+3i),(5i,5-3i,7):}|`, then `(i= sqrt(-1))`

A

z is purely real

B

z is purely imaginary

C

` z + bar(z) = 0 `

D

none of these

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ML KHANNA-COMPLEX NUMBERS -Self Assessment Test
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  11. If Z=ilog(2-sqrt(3)),then cos(Z)=

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  12. If z = |{:(1 , 1 + 2i, - 5i),(1 - 2i,-3,5+3i),(5i,5-3i,7):}|, then (i=...

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