Welcome, Guest: Register On Nairaland / LOGIN! / Trending / Recent / NewStats: 3,195,143 members, 7,957,271 topics. Date: Tuesday, 24 September 2024 at 10:10 AM |
Nairaland Forum / Nairaland / General / Education / Post Ur Chemistry And Mathematics Problems Here. (1687 Views)
Physics, Chemistry And Biology Textbooks Are Full Of Curses / Biology, Chemistry and Physics tutorial thread for jamb / Get Your Mathematics Problems Solved (2) (3) (4)
Post Ur Chemistry And Mathematics Problems Here. by Eemeekaa(m): 12:01pm On Jun 26, 2010 |
Do u have chemistry or mathematics problems 4rm any field pls feel free to post them here,many people are in need of them. |
Re: Post Ur Chemistry And Mathematics Problems Here. by lomaxx: 12:53pm On Jun 26, 2010 |
this is on permutation and basic counting principle. In how many ways can 3 guests sit together in 7 row of seats. |
Re: Post Ur Chemistry And Mathematics Problems Here. by tempest01(m): 12:55pm On Jun 26, 2010 |
lomaxx:Cheap, do u want the answer or u need the answer? |
Re: Post Ur Chemistry And Mathematics Problems Here. by lomaxx: 3:05pm On Jun 26, 2010 |
tempest01:Answer first now? It may not be as cheap as u think. D answer isn't important to me. It's d method. Sha, d answer is 30. What's ur method? |
Re: Post Ur Chemistry And Mathematics Problems Here. by tempest01(m): 3:59pm On Jun 26, 2010 |
e don tey sha but::::::::::::::: nPr=n!/(n-r)! = 7!/(7-3)!= 42 , mine |
Re: Post Ur Chemistry And Mathematics Problems Here. by lomaxx: 4:20pm On Jun 26, 2010 |
[color=#990000][/color] tempest01:aha, there's a problem. What you did, in correct when they are seated in no order. But in this case the 3 guests must be seated together in 7 seats, as in 123, 234, 345, 456, 567 = 3! * 5 ways= 30. Suprised? |
Re: Post Ur Chemistry And Mathematics Problems Here. by Eemeekaa(m): 2:41pm On Jun 27, 2010 |
Find d value of n in 2^n+3^n=12^n. |
Re: Post Ur Chemistry And Mathematics Problems Here. by lomaxx: 12:10pm On Jun 28, 2010 |
[/color][color=#990000] Eemeekaa:i wonder if the problem is as you put it , i.e, the original problem you were given to solve or you just made it up. I tried it sha and discovered that there is no algebraic method of solving this, you can only use calculus<so far as i know> for n=0 2^0 + 3^0 > 12^0 for n=1 2^1 + 3^1=5 12^1= 12 So there is a single solution and d solution is between 0 and 1. And there is no algebraic way of solving this. |
Re: Post Ur Chemistry And Mathematics Problems Here. by lordizak(m): 1:55pm On Jun 28, 2010 |
Let's make this thread lively. |
Re: Post Ur Chemistry And Mathematics Problems Here. by lomaxx: 2:00pm On Jun 28, 2010 |
[/color] lordizak:[color=#990000]how? |
Re: Post Ur Chemistry And Mathematics Problems Here. by Eemeekaa(m): 11:37pm On Jun 30, 2010 |
Re: Post Ur Chemistry And Mathematics Problems Here. by Obinoscopy(m): 2:52am On Jul 01, 2010 |
lomaxx: |
Re: Post Ur Chemistry And Mathematics Problems Here. by lomaxx: 8:38am On Jul 01, 2010 |
Obinoscopy:since you claim to know better, solve it. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Obinoscopy(m): 8:39pm On Jul 03, 2010 |
pay me and I'll solve it |
Re: Post Ur Chemistry And Mathematics Problems Here. by Shalomcapa(m): 11:01pm On Jul 03, 2010 |
If u knw u av wat it takes 2 b a math don. Differentiate {arctan(1+x)/(1-x)} |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 11:41pm On Jul 03, 2010 |
This ur differential question is very much good and i luv it, i 'll solve that as soon as possible and paste the solution to u. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 1:35am On Jul 04, 2010 |
arctan(1+x) means the tan inverse of (1+x). Let f(x) =arctan(1+x)/(1-x) also let 'u'=arctan(1-x) and 'v'=(1-x) > f(x)=u/v applying quotient rule of differentiation: > f'(x)={vdu/dx - udv/dx}/v^2 >du/dx =? dfrenting 'u' wrt x, du/dx = 1/{1+(1+x)^2} vdu/dx =(1-x)(du/dx) >dfrenting 'v' wrt x, dv/dx =-1, udv/dx = -arctan(1+x), v^2 =(1-x)^2, so substituting the values obtained in the quotient rule above and taking 'n'=(1-x), 'm'=(1+x) to enhance simplification gives: >{(n+(1+(m)^2)(arctanm)}/((1+m^2)n^2} as the answer. This solution can be understood at least by an average Alevel mathematician. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 1:36am On Jul 04, 2010 |
arctan(1+x) means the tan inverse of (1+x). Let f(x) =arctan(1+x)/(1-x) also let 'u'=arctan(1-x) and 'v'=(1-x) > f(x)=u/v applying quotient rule of differentiation: > f'(x)={vdu/dx - udv/dx}/v^2 >du/dx =? dfrenting 'u' wrt x, du/dx = 1/{1+(1+x)^2} vdu/dx =(1-x)(du/dx) >dfrenting 'v' wrt x, dv/dx =-1, udv/dx = -arctan(1+x), v^2 =(1-x)^2, so substituting the values obtained in the quotient rule above and taking 'n'=(1-x), 'm'=(1+x) to enhance simplification gives: >{(n+(1+(m)^2)(arctanm)}/((1+m^2)n^2} as the answer. This solution can be understood at least by an average Alevel mathematician. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Nobody: 2:04am On Jul 04, 2010 |
Ozorhumphery: What? For arctan(1+x), why didnt you use : arctan(1+x) ---> 1/ 1+ (1+x) --> u (1-x) ---> v d/dx = u/v ---> [v(d/dx u) - u(d/dx v)]/v^2 d/dx = 1/[1 = (1+x)^2)/(1-x)---> (1/ x^2+2x+2)/(1-x) = (x^2+2x+2)^-1 / (1-x) = [(1-x)(2x+2)- (x^2+2x+2)(-1)]/ (1-x)^2 =(2x+2-2x^2-2x+x^2+2x+2)/(1-x)^2 = [-(x-2)(x+2)]/(x-1)^2 Not sure if I'm correct though. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 2:26am On Jul 04, 2010 |
[color=#990000][/color] if u =arctan(1+x) du/dx can be precisely gotten,because if for example: y=arctanu, therefore dy/du =1/ (1+u^2) from first principle. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Nobody: 2:30am On Jul 04, 2010 |
Ozorhumphery:yea, I got that part. Can you look through my work and check for errors?I'm not positive about my answer lol BTW, are you good with RELATED RATES? |
Re: Post Ur Chemistry And Mathematics Problems Here. by Shalomcapa(m): 10:16am On Jul 04, 2010 |
@zorhumphery, good u attempted it, u're on the way just treat the arctan as a trig function. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 11:45pm On Jul 04, 2010 |
Treat the arctan as a trig function let see, |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 11:51pm On Jul 04, 2010 |
Gartos u missolved the whole thing |
Re: Post Ur Chemistry And Mathematics Problems Here. by Shalomcapa(m): 12:13am On Jul 05, 2010 |
C'mon ozorhumphery, theres no arm in trying. U can bro. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Shalomcapa(m): 12:16am On Jul 05, 2010 |
@ gartos, give it another attempt. Remember, theres just no harm in trying. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Shalomcapa(m): 1:48pm On Jul 07, 2010 |
@ozor, and Gartoz, where r u Guys, Math Gurus on nairaland, |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 8:44pm On Jul 07, 2010 |
Can someone tell us how ACID RAIN is formed. |
Re: Post Ur Chemistry And Mathematics Problems Here. by Adonike(m): 1:26am On Jul 08, 2010 |
It is formed simply through God's anger! |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 3:39am On Jul 08, 2010 |
Na wah for youoooo, na so u go take write the aptitude test? |
Re: Post Ur Chemistry And Mathematics Problems Here. by Ozorhumphery(m): 3:42am On Jul 08, 2010 |
Na wah for youooo, na so u go take right the aptitude test? |
Re: Post Ur Chemistry And Mathematics Problems Here. by lomaxx: 4:16am On Jul 08, 2010 |
Ozorhumphery:he is actually correct. But in a way. There is a theory of conflict formation called the Judeo- Christian theory of conflict. It proposes that every ' natural disaster' occurs as a result of ' God's anger' on 'sinful' nations. Well, personally , i don't agree with it . . . . But .@ ADONIKE is.nt entirely wrong. |
Unad Releases Post Ume Result 2010/2010 / Post Utme Result Of Yabatech Information 2010/2011 Session / FUTO 2nd List Out This Week
(Go Up)
Sections: politics (1) business autos (1) jobs (1) career education (1) romance computers phones travel sports fashion health religion celebs tv-movies music-radio literature webmasters programming techmarket Links: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) Nairaland - Copyright © 2005 - 2024 Oluwaseun Osewa. All rights reserved. See How To Advertise. 35 |