A real (4 × 4) matrix A satisfies the equation A 2 = I, where I is a (4 × 4) identity matrix. The positive eigenvalue of A is ________.

GATE Electronics and Communications (EC) 2014 Shift 1 Solved Paper

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A real (4 × 4) matrix A satisfies the equation A² = I, where I is a (4 × 4) identity matrix. The positive eigenvalue of A is ________.

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