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Nairaland Forum / Nairaland / General / Education / Nairaland Mathematics Clinic (493914 Views)
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Re: Nairaland Mathematics Clinic by Nobody: 8:05pm On Mar 07, 2015 |
Xup Agent of change.Pls which textbook can i get solution to a 4 by 4 matrix. |
Re: Nairaland Mathematics Clinic by akpos4uall(m): 3:37am On Mar 08, 2015 |
benji93: [quote author=Tpappie post=31244609][/quote] Let 12345678 = w The question can be written as w*w - (w - 2)(w + 2) w*w - (w*w - 4) w*w - w*w + 4 4 1 Like |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 1:05pm On Mar 08, 2015 |
Onase: don't really know bro. ...u cud browse online sir . |
Re: Nairaland Mathematics Clinic by ositadima1(m): 3:13pm On Mar 08, 2015 |
agentofchange1: This sums up Diophantis's time line, so, let's dig in; 1/6(x)+1/12(x)+1/7(x)+5+1/2(x)+4=x (x)-75/84(x)=9 9/84(x)=9 x=84 years I jumped simple steps as I am typing on phone. |
Re: Nairaland Mathematics Clinic by ositadima1(m): 3:36pm On Mar 08, 2015 |
yoji:. question sims wrong, cos in 4 yrs 3 mths it would we worth nothing in fact you'd be losing money. |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 4:32pm On Mar 08, 2015 |
ositadima1: good boy. |
Re: Nairaland Mathematics Clinic by joywendy(f): 1:12pm On Mar 09, 2015 |
so this thread is still alive? ![]() |
Re: Nairaland Mathematics Clinic by Nimarias(m): 1:25pm On Mar 09, 2015 |
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Re: Nairaland Mathematics Clinic by rashywire: 8:49am On Mar 10, 2015 |
pls some1 should help with dis. find d nth derivative of x^x. thanks in anticipation |
Re: Nairaland Mathematics Clinic by bolkay47(m): 6:43am On Mar 14, 2015 |
rashywire:dy/dx=x^x{lnx+1} |
Re: Nairaland Mathematics Clinic by Videx1: 8:59am On Mar 14, 2015 |
agentofchange1:agentofchange am sorry |
Re: Nairaland Mathematics Clinic by Videx1: 9:21am On Mar 14, 2015 |
I need u guys help again. I want u to explain moment generating function |
Re: Nairaland Mathematics Clinic by thankyouJesus(m): 9:23am On Mar 14, 2015 |
rashywire:let y = x^x take 1n of both sides 1n y = 1n x^x 1n y = x 1n x [dy/dx][1/y] = 1 + 1n x dy/dx = y [1 + 1nx] dy/dx = x^x [1 + 1nx]. Note: 1n also means log to base e. |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 4:43pm On Mar 15, 2015 |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 4:49pm On Mar 15, 2015 |
thankyouJesus: hmm u try bro , but not it . d guy said nth derivative & not first derivative . have u heard of Leibniz's theorem .? |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 5:00pm On Mar 15, 2015 |
Videx1: For a given random variable say X moment generating function , (mgf) for discrete case , having some density function , f(x) mgf , m(t) = E[etx ] = £ etx * f(x) . (£ : represents sigma. for summation ) & for continuous case , m(t)= $ etx *f(x) dx over some given range space of X ($: represents integral sign ) . bring up questions on it for more clarity & comprehension. |
Re: Nairaland Mathematics Clinic by thankyouJesus(m): 12:37pm On Mar 16, 2015 |
agentofchange1:yeah, but I don't know it. |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 4:35pm On Mar 16, 2015 |
thankyouJesus: OK here given f(x) = u(x)v(x) , fn (x) = £ nCr * u(r) *v(n-r) for r=1 , 2 , 3 , . . . , n (£ : represents sigma notation used for summation C: represents Combination u& v are functions of x that's it , hope u get ? |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 4:38pm On Mar 16, 2015 |
joywendy: sure! , u want it dead .? |
Re: Nairaland Mathematics Clinic by joywendy(f): 4:48pm On Mar 16, 2015 |
agentofchange1: lol...haba no....i used to follow the thread silently back in the day been long i ve been here. |
Re: Nairaland Mathematics Clinic by thankyouJesus(m): 4:49pm On Mar 16, 2015 |
agentofchange1:yeah, thank you. How come? |
Re: Nairaland Mathematics Clinic by Videx1: 5:40pm On Mar 16, 2015 |
agentofchange1:thanks |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 6:24pm On Mar 16, 2015 |
thankyouJesus: 1 (first derivative) , 2 ( second derivative) . . . e.t.c up to nth derivative . try get college maths vol. 2 or engineering math by h.k dass o r surf the net 4 more understanding . |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 6:25pm On Mar 16, 2015 |
joywendy: yea ..miss/Mrs. joy . I know that , just kidding . 1 Like |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 6:30pm On Mar 16, 2015 |
Videx1: UWC man. |
Re: Nairaland Mathematics Clinic by thankyouJesus(m): 7:47pm On Mar 16, 2015 |
agentofchange1:Thank you sire. If I can get you properly, the [d/dx][sinx cosx] to nth derivative is . . . . . . . . . .nC0sin0x cosn-0x + nC1sinx cosn-1 + . . . + nCnsinnx cos0x |
Re: Nairaland Mathematics Clinic by Emdee590(m): 7:51pm On Mar 16, 2015 |
[color=#990000][/color] The roots of the equation x^2+9x+k=0 are a (i.e alpha ) and a+1(i.e. Alpha + 1); The value of K is : (a) 9 (b) 10 (c) 11 (d) 12 Please gurus help as na ma test be that |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 9:21pm On Mar 16, 2015 |
Emdee590: OK recheck the question/options. sure its correct ? cus. m getting k=20 . 2 Likes |
Re: Nairaland Mathematics Clinic by Nobody: 12:42pm On Mar 17, 2015 |
agentofchange1: Yes you're right! The options are all wrong! α = 4 and α + 1 = 5 Which makes the equation => x2 + 9x + 20 And K = 20 1 Like |
Re: Nairaland Mathematics Clinic by agentofchange1(m): 11:02pm On Mar 17, 2015 |
doubleDx: yes boss , thought as much welcome back prof. its me benbuks. ur boy. where hast thou bin sir ?. |
Re: Nairaland Mathematics Clinic by Nobody: 7:27am On Mar 18, 2015 |
agentofchange1: Wow! General benbuks, is that you? You've don't a great job here bruv....Good to see you guys keeping the thread alive! That's the spirit; keep up the good work guys. God bless y'all! I have been kinda busy lately so I check around once in a while, but will start contributing soon! I like this your new moniker sha, nice one! Nice work people! Hi chief General Ositadima1; nice to have you back! Hailings bruv! |
Re: Nairaland Mathematics Clinic by Emdee590(m): 3:51pm On Mar 18, 2015 |
doubleDx: Thank you guys for a job well done. The question and options are okay . I solved and also getting k=20 so I think d question gat no option of that thank you all |
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