Mathematics - 25 August 2006

2006-08-25 08:09:12 · 3 answers · asked by iluvhipos 3

2006-08-25 08:01:16 · 4 answers · asked by Anonymous

I have tried it with mathematica but the result is too complicated to be simplified. I need a simplified expression. By the way a/b is a finite quantity.

2006-08-25 07:43:33 · 2 answers · asked by Dibakar D 1

how would you solve this

2006-08-25 07:42:01 · 9 answers · asked by iluvhipos 3

2006-08-25 07:34:30 · 8 answers · asked by Anonymous

Where do the circular trigonometric functions (such as sine and cosine) come from? I am not asking for their definitions. I am asking for their names. Where does the word "sine" come from?

I have heard they have Arabic origins but I am not sure.

2006-08-25 07:20:04 · 4 answers · asked by The Prince 6

integral (1/x dx) = ln x
but if I use integration by parts..
integral (1/x dx) where u= 1/x; dV=dx; dU =-(1/x^2)dx; V=x
it becomes:
integral (1/x dx)= (1/x)*x - int (x * (-1/x^2) dx
so
int (1/x dx)= 1 + int (1/x dx)
thus ln x = 1 + ln x....... !? if u substract both side by ln x it becomes 0=1 !!!!???
tell me what's wrong..
i don't think it's a matter of the constant...

2006-08-25 07:19:17 · 6 answers · asked by wills 3

There should be 2 answers; Biblical (Adam & Eve) and evolution (Homo Sapien). I already know the third answer,.... all of them ;-)

2006-08-25 07:11:50 · 2 answers · asked by ezgardener 2

how do you integrate t e^(-t^2) limits of integration is from 0 to infinity

2006-08-25 06:55:08 · 5 answers · asked by cuckoo meister 3

addition, subtraction, multiplication, or division

2006-08-25 06:31:12 · 14 answers · asked by christopkim951 1

2006-08-25 06:30:21 · 3 answers · asked by FauxPas 2

Please be coherent and complete in your answers.

2006-08-25 05:35:04 · 8 answers · asked by Anonymous

2006-08-25 05:32:19 · 8 answers · asked by Anonymous

Like how much Malaysia Ringgit to 1 USD? What formula to get the correct the answer?

2006-08-25 05:26:24 · 4 answers · asked by Yunni 2

if u have an unlimited source of water ,, 2 flasks which have measurements of only 5liters n 3 liters recpectively. there r no markings in between . the markings u will find are only 5 litres in one n 3 litres in other. so i want u to tel me how can a person take out exactly 4 litres of water.u can take water as many times u want n also can drop it as many times as u want. BUT PLS DO NOT GIVE ME STUPID ANSWERS , IF U DO, THEN I WIL TAKE CARE THAT U DONT GET 10 POINTS IN ANY OF MY QUESTION OR MY FRIENDS' QUESTION.

2006-08-25 05:20:18 · 6 answers · asked by 2nd Arsenal fan 1

it is from the lesson permutation and combination

2006-08-25 05:15:43 · 4 answers · asked by jefri t 1

plz give explanation also.

2006-08-25 05:06:51 · 10 answers · asked by ritika d 2

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 5 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 8 hours.

What fraction of the tank (initially empty) will be filled in 1.22 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

2006-08-25 04:51:46 · 20 answers · asked by Anonymous

A man gets off work on payday with his check. He cashes it and heads down town to do his shopping. His first stop at a store, he spends half his check plus ten dollars. He leaves and heads to the second store and spends half his money plus ten dollars. Continuing to the next store he spends half his money plus ten dollars. He is now broke.
How much was his check?

2006-08-25 04:48:47 · 9 answers · asked by SST 6

What is the best way to complete this problem? Im not just looking for an easy answer. I need to know how to work it out on paper. Thanks for any real help.

2006-08-25 04:31:33 · 6 answers · asked by Anonymous

2006-08-25 04:25:58 · 46 answers · asked by Anonymous

2006-08-25 04:21:40 · 38 answers · asked by Anonymous

2006-08-25 04:12:07 · 4 answers · asked by FauxPas 2

In "homework help" question dated a couple days ago, one poster mentioned Peano postulates (??don't try and explain what they are; I nearly flunked HS algebra and geometry) and put down a whole BUNCH of scary looking proofs. I assume he was having a giggle with the OP and this is on a par with Nessie or Bigfoot.
My technogeek husband mentioned that some intrepid souls actually sat down once and tried to "prove" as many mathematical basics as possible. They were trying to reduce the number of axioms/givens in use. Then Godel (spelling?) came up with some kind of weird theory....
He is teasing me, right? Did someone with way too much time on their hands actually sit down and establish, with way too many equations and formulas, what any nitwit can.....?
Math history buffs, help!

2006-08-25 04:03:04 · 9 answers · asked by samiracat 5

2006-08-25 03:41:24 · 21 answers · asked by Anonymous

The method to find square-roots of a number is taught in schools. It is based on principle of divisions. How can one find cube-root of a positive number arithmatically, in a similar fashion. Use of log-tables, calculators or computers not allowed.

2006-08-25 03:19:38 · 8 answers · asked by innocent 3

i have a test on the metric system and i dn't know anything about it can somebody give me some input by 8 45

2006-08-25 02:19:16 · 5 answers · asked by Anonymous

its a very easy chapter but i dont get it plz tell me in steps

2006-08-25 02:14:46 · 14 answers · asked by Anonymous

we have a math project at school and we have to take anything related to geometry,algebra,etc.
we cannot take a topic related to statistics b'coz that is already taken by most of the people.

2006-08-25 01:52:28 · 10 answers · asked by Richa 1

2006-08-25 01:42:06 · 7 answers · asked by tweechszone 1