2nioshine: Really impresed wsh i could remain always on d tread lyk wen it was newly opend............bt sku strez keeps........@Ric,echibuzor,biola,gh.guru and all who az contributd 'RESPECT'....Where iz my man Double dx @?

2nioshine: Really impresed wsh i could remain always on d tread lyk wen it was newly opend............bt sku strez keeps........@Ric,echibuzor,biola,gh.guru and all who az contributd 'RESPECT'....Where iz my man Double dx @?

Richiez: respect too man! hmmm double dx hasn't been on for a while now, i don't know the reason sha

2nioshine: Really impresed wsh i could remain always on d tread lyk wen it was newly opend............bt sku strez keeps........@Ric,echibuzor,biola,gh.guru and all who az contributd 'RESPECT'....Where iz my man Double dx @?

johnpaul1101: Please someone should help me out with this: solve cos345 without the use of calculator or table

MEILYN: @ Richiez can we meet pls?

Jasboi: hi pls can some teach me how to find domain and range of a function?..pls i nid to knw dis

oluebubesyd: required to prove: (cosec A)^2- cosecA= [cotA]^2/(1 + sinA)

Richiez: sure! anytime u'r ready

oluebubesyd: required to prove:
(cosec A)²- cosecA= [cotA]²/(1 + sinA)

Youngsage:
x + y =5 -------- eqn i.
x^x + y^y=31 ----- eqn ii.
From equatns i & ii, take the log of both sides
(xlog^x + ylog^y) = log 31------ eqn iii.
log(x+y) = log 5 ------------ eqn iv.
xylogxy= log 31 -------- eqn v.
log xy = log 5 --------- eqn vi.
(Using elimination method);
xylog5 = log31
xy = log 31/log 5 =6.2 approx. 6.

Recall, from eqn i, x + y = 5.
So x = 6/y or y = 6/x.
Therefore x=2 when y=3.
ans: x=2, and y=3.

Richiez:

nice try bro, although you made some some mistakes especially at the point where you took log of both sides. e.g it ought to be log(x+y)= log5 and not logx + logy = log5. but i must admit, you did a very good job.

here's another approach;

x + y = 5.......(1)
x^x + y^y =31.......(2)

from eqn(1), x=5-y, hence we substitute this value for x in eqn(2).
(5-y)^(5-y) + y^y = 31.......(3)
now, we have reduced the problem to what value of y that must be inserted in eqn (3) to obtain 31.

a thorough look at eqns (1) & (2) shows that the values of x & y must be positive integers within the range 0<x<5 and 0<y<5
clearly, y=3
i.e (5-3)^(5-3) + 3^3
2^2 + 27
4+27=31
now that we have established that y=3, we shall substitute the value of y in eqn(1) to get x
recall that x+y=5
therefore; x+3=5 or x=5-3=2
hence, x=2 when y=3

solomon111: The fifth equation follows the principle/laws of logarithm.
E.g
1)logx +logy =logxy
2)alogx +blogy=ablogxy.
3)logx-logy=logx/logy

ultranet: pls can u solve dis question: 3^x=9x...(interested in d working)

Richiez: This thread is the meeting point for nairaland maths gurus...i dare you all to ask me a question in mathematics without me having an answer to them, LETS START

O'steve:
pls awos help me wit dis question: An interview was conducted among some ICAN staff working in examinations,accounts and administrative departments. The interview reveals dt some staff hv served in more dan one of dese departments, during d period investigated. In d interview,42 said dey hv served in at least 2departs,49 said dey hv served in exams,63 said dey hv served in accnts while 10claimed dey hv served only in admin dept. It was discovered dt 35 hv served in xactly 2depts while 23served in exam dept only and 25 served in accnts dept only. (a)Draw Euler-venn diagram to illustrate d above info. (b) Determine d no of staff who hv served in d depts of : i. Exams and Admin ii.Exams and accnts iii.Accnts and admin iv. Admin v. Exams,accnts and admin. (c) How many staff were involved in the interview? Thank u for ur anticipated co-operation.

fazbuk: Pls solve: Solve d 2nd oda differential equation
(d^u/dt^2 - 4u=24sin2t; given dat @ t =0,u =3 and du/dt =4

solgee: Expand (4X+5)^8
Thank You