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Search took 0.01 seconds. Search: Posts Made By: kakos22
Forum: Information & Answers 2010-07-22, 19:06
Replies: 0
Views: 1,213
Posted By kakos22
Actuarial Science

Next year I'm finishing my bachelor degree in pure mathematics and i want to study actuarial.
Can anybody suggest me good universities in England for studying actuarial.
Also I want to ask if i can...
Forum: Math 2010-07-08, 16:59
Replies: 6
Views: 1,379
Posted By kakos22
thanks a lot cheesehead you really helped me. I...

thanks a lot cheesehead you really helped me. I will be seeking employment in Cyprus since i'am from Cyprus but i have no problem to work some years abroad.The web-page you sent me is about America...
Forum: Programming 2010-07-08, 16:49
Replies: 4
Views: 1,595
Posted By kakos22
Which programming language i shall learn?

I want to teach a new language to kids about 9-10 years old and i know that the best way for kids to learn is by playing learning games on pc.So i decided to learn a new programming language in...
Forum: Math 2010-07-05, 11:45
Replies: 6
Views: 1,379
Posted By kakos22
Any good suggestions please?

Next year I'm finishing my bachelor degree in pure mathematics and i want to continue my master and my doctoral degree in pure mathematics but I know that if i do so, my job opportunities will be...
Forum: Homework Help 2010-04-18, 23:21
Replies: 18
Views: 3,413
Posted By kakos22
Thanks a lot to everybody who helped me..i solved...

Thanks a lot to everybody who helped me..i solved the problem with a very beautiful proof.so if anybody is interested about the proof let me know...thanks again one more time to everybody that helped...
Forum: Information & Answers 2010-04-18, 23:18
Replies: 4
Views: 554
Posted By kakos22
oh..i didn't notice that is a math forum..yes my...

oh..i didn't notice that is a math forum..yes my problems next time has to been sent there because there are not homework but more like big problems form university..I am sorry one more time...about...
Forum: Information & Answers 2010-04-18, 20:20
Replies: 4
Views: 554
Posted By kakos22
I am really sorry i didn't know that i had to...

I am really sorry i didn't know that i had to post it to the Homework Help thread..
this problem is different from the other and i thought that i could post it here too..
if this is a problem i...
Forum: Information & Answers 2010-04-18, 13:21
Replies: 4
Views: 554
Posted By kakos22
Prove that the limit is infinity..

Let g is a continuous function and lim(x->oo) g(x)=oo.We define
function f(x)=e^(-x) ∫_0^x g(t)e^tsin(x-t)dt
prove that lim(x->oo) f(x)=oo

Good luck..if something is not clear let me know
Forum: Homework Help 2010-04-14, 13:29
Replies: 18
Views: 3,413
Posted By kakos22
thanks very much Rajula and Silverman for helping...

thanks very much Rajula and Silverman for helping me..right now i am trying to prove the following: if lim(x->oo) (f(x)+f'(x)+f''(x))=0 then lim(x->oo)(f(x))=0.(f'' is continuous).
Is just to...
Forum: Homework Help 2010-04-11, 17:15
Replies: 18
Views: 3,413
Posted By kakos22
I am just trying to find a function f with the...

I am just trying to find a function f with the following properties:
lim(x->oo) f(x), lim(x->oo) f ' (x) don't exist(neither +oo or -oo) but lim(x->oo) (f(x)+f '(x)) exists in R.
...
Forum: Homework Help 2010-04-10, 18:17
Replies: 18
Views: 3,413
Posted By kakos22
Never mind i just proved it. Actually we don't...

Never mind i just proved it. Actually we don't need that g' has to be continuous but only g to be continuous and that exists g'.If anybody is interested about the proof i will post it..but i think i...
Forum: Homework Help 2010-04-10, 17:18
Replies: 18
Views: 3,413
Posted By kakos22
I am just trying to prove the following lemma: ...

I am just trying to prove the following lemma:
Let function g has continuous derivative g' and lim x->oo g(x) exists and is in R.
Then lim x->oo g '(x) doesn't exist or exists and is 0.

I think...
Forum: Homework Help 2010-04-10, 14:02
Replies: 18
Views: 3,413
Posted By kakos22
yes Silverman this is already clear..that is why...

yes Silverman this is already clear..that is why the lemma i was trying to prove is not true..unfortunately rajula has found a counter example.
Forum: Homework Help 2010-04-10, 13:24
Replies: 18
Views: 3,413
Posted By kakos22
I am just trying to figure out. if the condition...

I am just trying to figure out. if the condition from the problem holds with L in R, then it has to be limf '(x)=limf ''(x)=0??..can anybody find an example such that limf '(x)= - limf...
Forum: Homework Help 2010-04-09, 21:44
Replies: 18
Views: 3,413
Posted By kakos22
oh..thanks a lot rajula, you have just saved my...

oh..thanks a lot rajula, you have just saved my life:smile:..i was just trying to prove something that is not true and you just saved my time..thank you..

I will come back with something new..
Forum: Homework Help 2010-04-09, 21:12
Replies: 18
Views: 3,413
Posted By kakos22
Thanks for your hints..you are just very near my...

Thanks for your hints..you are just very near my thoughts..actually I am trying to prove the following: if a function g has continuous derivative g' and lim(x-->oo)g(x) is in R then...
Forum: Homework Help 2010-04-09, 17:17
Replies: 18
Views: 3,413
Posted By kakos22
extremely difficult problem with a function.

Let f:R->R is a function which its second derivative f'' is continuous function.
Prove that if lim(x->infinity) (f(x)+ f '(x) + f ''(x))=L then lim(x->infinity) f(x)=L. L is in R*.
...
Showing results 1 to 17 of 17

 
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