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## #1 Re: Help Me ! » LaTeX - A Crash Course » 2011-10-09 22:33:52

awesome!!! thank you!
i've converted it to .jpg

## #2 Re: Help Me ! » LaTeX - A Crash Course » 2011-10-09 20:53:33

thank you Au..
I need it at home.. can you give me the code?

## #3 Re: Help Me ! » LaTeX - A Crash Course » 2011-10-09 08:26:21

hey.. how do i put .gif in latex?

## #4 Re: Help Me ! » LaTeX - A Crash Course » 2011-10-09 02:24:29

yes, site is wonderful..thank you very much for sharing

## #5 Re: Help Me ! » LaTeX - A Crash Course » 2011-10-09 02:20:10

your site helped me..i just drew

## #6 Re: Help Me ! » LaTeX - A Crash Course » 2011-10-09 02:16:41

no..i don't how to get it here..

## #7 Re: Help Me ! » LaTeX - A Crash Course » 2011-10-09 02:06:39

great.. thank you bobbym and anonimnystefy

it's
\usepackage{ bbold }
\mathbb{1}

## #8 Re: Help Me ! » LaTeX - A Crash Course » 2011-10-09 01:50:32

hi there.. does anybody know how do i get characterictic function (not \chi , i need symbol with 1 ) in latex? i can't find it..

## #9 Help Me ! » algebra » 2011-01-10 06:48:24

loida
Replies: 1

i need help, i don't have much materials where i could read this..so, if there is anyone willing to help... i'd be thankful

find minimal polynomial over Q from (1+ i)/ (sqrt2)

determine all generators of  Galois group  13th cyclotomic field Q_w13

you too!
both of you

## #11 Re: Help Me ! » Volume of Rotation » 2010-12-29 00:35:38

i know.. it's because i didn't see that it's y>=1
i'm thankful to both of you Bobies

thank you!

## #13 Re: Help Me ! » Volume of Rotation » 2010-12-29 00:12:40

i'm getting pi*176/3 in both cases

http://en.wikipedia.org/wiki/Solid_of_revolution  Cylinder method

## #14 Re: Help Me ! » Volume of Rotation » 2010-12-28 23:30:29

i  got

the same u get in

## #15 Re: Help Me ! » Volume of Rotation » 2010-12-28 22:48:12

thanks .. i missed 1<=y part .. i drew y<=1

## #16 Help Me ! » Volume of Rotation » 2010-12-28 13:40:36

loida
Replies: 20

I'd like to check if i got correct answer

Find the volume of the solid generated by rotating the region trapped between

around the y-axis.

i get

i was using formula

then

tnx R

## #18 Help Me ! » modules » 2010-04-23 21:42:21

loida
Replies: 2

let r be a commutative ring, I ideal in R and P r-module.
how should i prove that P/IP is module over R/I for multiplying (r+I,p+IP)-->rp+IP
and if P projective R-module, i have to prove P/IP is projective R/I-module

thanks

woow!!
thanks Ricky!

## #20 Jokes » this is for Mr. Ricky » 2010-01-10 08:22:09

loida
Replies: 0

i thank him for sharing his knowledge..sth little to cheer u up

tnx Ricky

## #22 Re: Help Me ! » algebra(ideals) » 2010-01-09 09:25:07

(2) = (6)?
(1),(2),(3),(5),(7),(8),(9) ?
don't know how check with 2 elements, sorry
i'm afraid i have to quit, i don't have much time left and have much things to learn
but thanks anyway...i really appreciate ur effort
i'm ashamed of my ignorance..

## #23 Re: Help Me ! » algebra(ideals) » 2010-01-08 11:19:29

would it be a problem if u put a solution on these exerices and i tell what i don't understand..i'm sorry, i'm just stupid for this things and don't know the basic

tnx once again...i'm really thankful for everything what u've written

## #24 Re: Help Me ! » abstract algebra problem(groups, rings) » 2010-01-08 10:42:21

Ricky..thanks alot!!! i really appreciate ur help

so, 1 is out cause p=7 prime, |G|>1
can i say that A_8 has (8*7*6*5*4*3*2)/7 cycles of length 7, which means 5760 cycles 7-cycle
i get 960 subgroups of order 7 from this cycles..960=1(mod7) and 960| |A_6| ..??

#3 ..dont know

## #25 Re: Help Me ! » algebra(ideals) » 2010-01-08 09:37:04

tnx Ricky

i only know Z/10Z={10Z, 1+10Z,2+10Z,....9+10Z}
2 is prime, but not irreducible

a) (0)^(-1)=0 , (1)^(-1)=1, (2)^(-1)=8, (3)^(-1)=7, (4)^(-1)=4,(5)^(-1)=5,(6)^(-1)=6,(7)^(-1)=3,(8)^(-1)=2,(9)^(-1)=9 ?
i'm desperate
could u pls help me to figure this out?