(c) (5%) Find an explicit formula for G_k.

(a) (3%) Find the eigenvalues of A. ul

(b) (6%) Is A diagonalizable? Justify your answer.

107台大資工 (10%) Your answer will be considered correct only if all the true statements are selected. Let A be an nxn matrix. (a) If x1 and x2are the cigenvectors of A, then x1 + x2 is also an eigenvector of A. (b) If AT = -A, then A is singular. (c) If A2 = A. (A+1)n = 1 + (2n+1)A. (d) If A = AT, then A is diagonalizable.(e) If A = and B and D are invertible,then.

110交大資訊聯招 b.(10 points) Given a sequence 7, -6, 20, -24, 64, -96,... comes from for k ≥ 0, with G0 = 7, G1 = -6 and G2 = 20. Please find the number .

(a) (4%) What are the values of G4 and G5?

(b) (5%) Give a matrix A such that

(d) (6 %) What is the limit of Gk as k →∞?

109北科大電子_工數 ㆍ(12%) Find an explicit formula for the sequences defined recursively by

105交大資訊聯招 (6points) Three persons, TC, CC, and YJ, have their own gold. They always divide their own two equal parts and donate to others every day. IC, for example, has 12-kilograms gold today and donate 6 kilograms to Cc and the other 6 kilograms to Y.. If TC has 6 kilograms, CC has 1 kilogram, and YJ has 2 kilograms at first, how many kilograms of gold do CC and YJ have after 365 days?

106交大資訊聯招 (10 points) Political affiliations change from one generation to the next. We consider three parties, labeled D, K, and T. In one generation, membership in D goes 80% to D, 10% to K, and 10% to T； membership in K goes 20% to D, 80% to K, and none to T； and membership in T goes 50% to D, 10% to K, and 40% to T. What is the long-term steady state for the three parties (membership ratios among these three parties)?

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