原帖由 muer1121 于 2008-12-2 21:14 发表 http://www.dolc.de/forum/images/common/back.gif
做实验还有tutor带？作博士的该当tutor带别人了吧？
以前的tutor现在的同事，自然比较照顾我这个外国人。跟那些他们已经打了很多年交道的公司，我一开始搞不定，不过现在都要我一个人去搞定了。。。5555
原帖由 UCer 于 2008-12-2 22:35 发表 http://www.dolc.de/forum/images/common/back.gif
$汗$ ,那说明她老公赚得比她还少...
嫩这是气那小姑娘呢吧.
我也意识到了哈哈:(
原帖由 UCer 于 2008-12-2 22:35 发表 http://www.dolc.de/forum/images/common/back.gif
$汗$ ,那说明她老公赚得比她还少...
嫩这是气那小姑娘呢吧.
let x = tax class of the weman,y = tax. of the man
if x = 3 ,income =f(x)then income = 1200+
this is my math part.
i am not thinking so deep as your.
$汗$
ok,it is too complicated logic equations.
i try.
if x=3,incomex =1200+
bczx+y=8,y = 5
incomey = f(y) < f(x)
we want to prove total utility function
MAIN
incomex + incomeyachievemax at point (x=3, y=5)
then we should know detail about the function f()
what we know nowis that ,, f() is increasing , and f'(x) < 0
the is enough to prove the MAIN,
you two guys is very good at mathematics,at least fast than me.
there is some logic mistake in my equations.
but just for fun,no body will really check it :D
为什么我的假期只有20天 $m25$
原帖由 仙人掌拍仙人球 于 2008-12-18 11:35 发表 http://www.dolc.de/forum/images/common/back.gif
为什么我的假期只有20天 $m25$
how old are you? which kind of contract do you have?
25
半职的合同 $m17$
同问