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If [[alpha, beta], [gamma, -alpha]] is t...

If `[[alpha, beta], [gamma, -alpha]]` is to be square root of two-rowed unit matrix, then `alpha,beta` and `gamma` should satisfy the relation. a. `1-alpha^2+betagamma=0` b. `alpha^2+betagamma=0` c. `1+alpha^2+betagamma=0` d. `1-alpha^2-betagamma=0`

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