If matrix A=[-1 1 ] [ a b] If A²=I and I is a identity matrix find the value of a and b Answer it fast please its urgent
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In linear algebra, the identity matrix, or sometimes ambiguously called a unit matrix, of size n is the n × n square matrix with ones on the main diagonal and zeros elsewhere. ... (In some fields, such as quantum mechanics, the identity matrix is denoted by a boldface one, 1; otherwise it is identical to I.)
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