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If A=|[alpha,2], [2,alpha]| and |A|^3=...

If `A=|[alpha,2], [2,alpha]| and |A|^3=125` , then the value of `alpha` is a.`+-1` b. `+-2` c. `+-3` d. `+-5`

A

`pm=2`

B

`pm=3`

C

`pm=5`

D

0

Text Solution

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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`

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

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

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

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

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