有答案么？看看结果对不对

偶的答案很长的

不知道怎么打出来

涂鸦

Quote:

下面是引用lauraych于2004-08-10 12:52 AM发表的 :
试试这样
把tanx 拆成 sinx/cosx
根号也断成上下两部分

然后你算算
.......

noh...i've tried this way...

Quote:

下面是引用debug于2004-08-10 10:44 AM发表的 :

不然叫“高”干吗

上大学理科必修么?

Quote:

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?

是的呀

Quote:

下面是引用o_ice_o于2004-08-10 10:47 AM发表的 :
偶的答案很长的

不知道怎么打出来

have a try. i do have the answer.. see if you are right or not...who worked it out?

can you guys just stop pouring water here....

thanks....

Quote:

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?

root2/2ln(1+x~4)+root2arctan({oot2 }x-1)-root2arctan([root2]x+1)+c

我想你应该看得懂的八

Quote:

下面是引用o_ice_o于2004-08-10 11:03 AM发表的 :

root2/2ln(1+x~4)+root2arctan({oot2 }x-1)-root2arctan([root2]x+1)+c

我想你应该看得懂的八

which way did he use????

i need to know that... the answer seems like the one i've got...

come tell me!!!! do you want me to call you???

Quote:

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...

.......

换元法

Quote:

下面是引用o_ice_o于2004-08-10 11:13 AM发表的 :

换元法

tanx=u?
root of tanx=u?

which one????

details!!!!

Quote:

下面是引用sunnybear于2004-08-10 11:14 AM发表的 :

tanx=u?
root of tanx=u?

which one????
.......

u=arctanx~2
dx=2u/1+u~4

Quote:

下面是引用sunnybear于2004-08-10 11:14 AM发表的 :

tanx=u?
root of tanx=u?

which one????
.......

TANX=U~2

ˆ   2    
¦   x    
¦ ———————— dx
¦       4  
  1 + x

how do you do this one???? i am up to here...