作者: wmt98 (winner) 看板: Math
標題: [考題] 100年新北市考題
時間: Tue Jun 14 20:46:44 2011
20.設數列<An>滿足a1=根號3，An+1=根號3+2An，n=1，2，3，則lim(n→∞)An的值？
答案：３
21.設M={A|A=[aij]3*3}，aij包含{0,1,2,3,4,5}，若從M中隨機任取一矩陣A
，則此矩陣A為對稱矩陣（A=AT）的機率是？
答案：1/216
24.在正方形ABCD，A(3,2)，B(7,3)，C在第一象限，D(x,y)，則x+y=?
答案：8
25.已知y=(1+i)/(1+根號3i)，i=根號-1，若y的n次方為實數，則n的最小正整數值為?
答案：12
麻煩各位幫忙，我這幾題不會，請大大幫忙，感恩叩謝!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 1.169.173.108
※ 編輯: wmt98 來自: 1.169.173.108 (06/14 20:49)
推
06/14 20:51, , 1F
06/14 20:51, 1F
→
06/14 20:52, , 2F
06/14 20:52, 2F
→
06/14 20:52, , 3F
06/14 20:52, 3F
→
06/14 20:53, , 4F
06/14 20:53, 4F
→
06/14 20:54, , 5F
06/14 20:54, 5F
→
06/14 20:55, , 6F
06/14 20:55, 6F
→
06/14 20:55, , 7F
06/14 20:55, 7F
→
06/14 20:55, , 8F
06/14 20:55, 8F
推
06/14 20:58, , 9F
06/14 20:58, 9F
→
06/14 20:58, , 10F
06/14 20:58, 10F
→
06/14 21:01, , 11F
06/14 21:01, 11F
推
06/14 21:13, , 12F
06/14 21:13, 12F
→
06/14 21:13, , 13F
06/14 21:13, 13F
推
06/15 11:22, , 14F
06/15 11:22, 14F