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If A=((alpha,3),(3,alpha))and |A|^3=-125...

If `A=((alpha,3),(3,alpha))and |A|^3=-125` , then `alpha` equals

A

`pm1`

B

`pm2`

C

`pm3`

D

`pm4`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • If A=((alpha,-2),(-2,alpha))and |A|^3=125 , then alpha equals :

    A
    `pm1`
    B
    `pm2`
    C
    `pm3`
    D
    `pm4`

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