The only real number solutions to the equation x 2 = 1 are x = 1 and

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The only real number solutions to the equation x2 = 1 are x = 1 and x = –1

(A) Show that

01 A = [!] 10

satisfies A2 = I, where I is the 2 × 2 identity.

(B) Show that

B = 1-] 0 -1 - 1 0

satisfies B2 = I.

(C) Find a 2 × 2 matrix with all elements nonzero whose square is the 2 × 2 identity matrix.

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Finite Mathematics For Business Economics Life Sciences And Social Sciences

ISBN: 9780134862620

14th Edition

Authors: Raymond Barnett, Michael Ziegler, Karl Byleen, Christopher Stocker

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