For the following matrices A, Computo AT. If A is a 2x2 matrix with real, different eigenvalues, draw the phase portraits. a) A = (-108/₂2 -=-1-2/ ·1.8 -0.8

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Q: -) Write the Cayley table for the group U(15).

A: U(15) is the set of all elements in ℤ15={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14} ; x≡x ,such that…

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Q: how did you compute the answers?

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Q: "36. Prove that a square matrix A is invertible if and only if A^TA is invertible

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