【考研类试卷】工程硕士(GCT)数学-试卷52及答案解析.doc

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1、工程硕士(GCT)数学-试卷 52 及答案解析(总分:52.00,做题时间:90 分钟)一、选择题(总题数:26,分数:52.00)1.选择题(25 题)下列每题给出的四个选项中,只有一个选项符合题目要求。(分数:2.00)_2. (分数:2.00)A.B.C.D.3. (分数:2.00)A.B.C.D.4. (分数:2.00)A.B.C.D.5. (分数:2.00)A.B.C.D.6. (分数:2.00)A.B.C.D.7. (分数:2.00)A.B.C.D.8. (分数:2.00)A.B.C.D.9. (分数:2.00)A.B.C.D.10. (分数:2.00)A.B.C.D.11. (分

2、数:2.00)A.B.C.D.12. (分数:2.00)A.B.C.D.13. (分数:2.00)A.B.C.D.14. (分数:2.00)A.B.C.D.15.设三阶矩阵 (分数:2.00)A.6B.18C.-6D.-816. (分数:2.00)A.B.C.D.17. (分数:2.00)A.B.C.D.18. (分数:2.00)A.B.C.D.19. (分数:2.00)A.B.C.D.20. (分数:2.00)A.B.C.D.21. (分数:2.00)A.B.C.D.22.若 ab1, (分数:2.00)A.RPQB.PQRC.QPRD.PRQ23. (分数:2.00)A.B.C.D.24.

3、 (分数:2.00)A.B.C.D.25. (分数:2.00)A.B.C.D.26.在 (分数:2.00)A.-4B.-2C.2D.3工程硕士(GCT)数学-试卷 52 答案解析(总分:52.00,做题时间:90 分钟)一、选择题(总题数:26,分数:52.00)1.选择题(25 题)下列每题给出的四个选项中,只有一个选项符合题目要求。(分数:2.00)_解析:2. (分数:2.00)A.B. C.D.解析:解析:3. (分数:2.00)A.B. C.D.解析:解析:4. (分数:2.00)A. B.C.D.解析:解析:5. (分数:2.00)A.B.C.D. 解析:解析:6. (分数:2.0

4、0)A. B.C.D.解析:解析:7. (分数:2.00)A. B.C.D.解析:解析:8. (分数:2.00)A.B.C. D.解析:解析:9. (分数:2.00)A.B.C.D. 解析:解析:10. (分数:2.00)A.B. C.D.解析:解析:11. (分数:2.00)A.B.C. D.解析:解析:12. (分数:2.00)A.B.C.D. 解析:解析:13. (分数:2.00)A.B. C.D.解析:解析:14. (分数:2.00)A. B.C.D.解析:解析:15.设三阶矩阵 (分数:2.00)A.6B.18C.-6 D.-8解析:解析:由于已知 AB,故 A 与召有相同的特征值。

5、由|E-A|= 知矩阵 A 至少有一个特征值 1 =2 16. (分数:2.00)A.B. C.D.解析:解析:17. (分数:2.00)A. B.C.D.解析:解析:18. (分数:2.00)A. B.C.D.解析:解析:19. (分数:2.00)A. B.C.D.解析:解析:20. (分数:2.00)A.B.C. D.解析:解析:21. (分数:2.00)A.B. C.D.解析:解析:22.若 ab1, (分数:2.00)A.RPQB.PQR C.QPRD.PRQ解析:解析:23. (分数:2.00)A. B.C.D.解析:解析:24. (分数:2.00)A.B. C.D.解析:解析:25. (分数:2.00)A.B.C. D.解析:解析:26.在 (分数:2.00)A.-4 B.-2C.2D.3解析:解析:对于任何 n 阶方阵 A=(a ij )nn 及 x=(x 1 ,x 2 ,x n ),有

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