# Challenge Proof Problem

Discussion in 'Math' started by ihaveaquestion, Jan 23, 2011.

1. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
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Hi Guys,

I have an incredibly hard challenge problem... you can find the two pages attached. As you can see, my prof. allows help from anyone/anything... I have no idea to start, but I remember he said that you just need the identities on the 2nd page.

Any help?

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2. ### Georacer Moderator

Nov 25, 2009
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Could you repost the pages as images and attach them on your post? It would be very helpful.

As for your problem: "Cough, Cough... <drama>Physics! NOOOOOOO!!!"

May 1, 2009
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How's this?

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4. ### Georacer Moderator

Nov 25, 2009
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I hate to be picky, since I 'm not going to help you with this problem, but I think some of the other members mind find these small pictures hard to read.

5. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
314
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Hope this is better....

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6. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
314
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Not sure why the first pic didn't come out....

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7. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
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It's not letting me delete my other posts either... anyway, third time's a charm.

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8. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
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Any help guys?

9. ### thatoneguy AAC Fanatic!

Feb 19, 2009
6,357
727
Pretty intense proof.

Do we get the \$50 if we solve it?

10. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
314
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If I get some help I'd certainly be willing to split it

11. ### thatoneguy AAC Fanatic!

Feb 19, 2009
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727
I was kidding, actually.

Though I am interested as to what class/school and what level this question is at.

12. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
314
0
Surely there's someone out there willing to brave this problem with me.

13. ### t06afre AAC Fanatic!

May 11, 2009
5,939
1,227
What if your teacher also is a member of this forum

14. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
314
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as mentioned, he said it's OK to get help... so in other words, if he was a member, he wouldn't care.

15. ### thatoneguy AAC Fanatic!

Feb 19, 2009
6,357
727
I'm guessing one of those people who love doing math for the sake of math may be along. Could take a year, but a Good Will Hunting always pops in now and again.

What level is this course at? undergrad year, etc.

16. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
314
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i've attached the work that i've done for this problem so far, but am kind of stuck now... any help please?

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17. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
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anyone willing to help?

18. ### ihaveaquestion Thread Starter Active Member

May 1, 2009
314
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I'm having trouble calculating the first term -- $\nabla$^2(E)... could someone at least please help me with that? thanks

Last edited: May 2, 2011
19. ### Georacer Moderator

Nov 25, 2009
5,175
1,284
I don't think you will find any help in this forum. Most users' span of knowledge is centered around electronics, not math or physics.

Maybe you should look elsewhere for help, in a math, or physics forum. If I 'm not mistakes, there are other fora more specialised in these topics.

20. ### mjhilger Member

Feb 28, 2011
119
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Do you understand that the symbol is asking you for the gradient of the vector E? So, the ^2 is grad squared or second order partial deritive of the x,y,z components of the vector E. You will need to understand a good deal of calculus to work this problem. I'm sorry I don't have time to look over it to help more.