下面是引用芋芋甲申于2004-08-10 10:51 AM发表的 :上大学理科必修么?
下面是引用sunnybear于2004-08-10 10:53 AM发表的 :have a try. i do have the answer.. see if you are right or not...who worked it out?
下面是引用sunnybear于2004-08-10 11:09 AM发表的 :which way did he use????i need to know that... the answer seems like the one i've got..........
下面是引用sunnybear于2004-08-10 11:14 AM发表的 :tanx=u?root of tanx=u?which one????.......
下面是引用sunnybear于2004-08-10 11:45 AM发表的 :2 2 (x + ‹2x + 1)·(x - ‹2x + 1)