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Re: Nairaland Mathematics Clinic by Deicide: 12:35am On Feb 18, 2017
masperano:


yea I know, I thought you made a slight error since x cannot be greater than 6 (i.e x>6) and at the same time x less than 2( i.e. x<2) you wrote (6 < X < 2). So it should be the other way round... that is 2< x<6. Cheers!
Ok thanks
Re: Nairaland Mathematics Clinic by dyshow(m): 6:30pm On Feb 23, 2017
I want to believe that there are real mathematicians in this group. So I wanna share my recent exam questions with them nd see who can solve it!!!

Re: Nairaland Mathematics Clinic by Olarewajub: 8:03am On Feb 25, 2017
Please i need assistance with interpretation of this question.

A point A and B divide the line joining P (3,2) and Q (7,9),internally and externally in the ratio of 5:4 respectively. Find the coordinates of A and B.


Will i be right if i say m=5 and n=4?
Re: Nairaland Mathematics Clinic by quitereal6: 11:33am On Feb 25, 2017
Hi all. Please what's the easiest way to find the value of the angle A in the equation below (without using trial and error method)

tanA - sinA = 0.083

Cc teempakguy profmathsland mathefaro thankyoujesus and all maths guru
Re: Nairaland Mathematics Clinic by Nobody: 12:17pm On Feb 25, 2017
Olarewajub:
Please i need assistance with interpretation of this question.

A point A and B divide the line joining P (3,2) and Q (7,9),internally and externally in the ratio of 5:4 respectively. Find the coordinates of A and B.


Will i be right if i say m=5 and n=4?

I think they meant A divides internally in the ratio of 5:4 and B divides externally in the ratio of 5:4. So solve for the coordinates of A and B separately using the same ratio.
Re: Nairaland Mathematics Clinic by thankyouJesus(m): 3:33pm On Feb 25, 2017
quitereal6:
Hi all. Please what's the easiest way to find the value of the angle A in the equation below (without using trial and error method)

tanA - sinA = 0.083

Cc teempakguy profmathsland mathefaro thankyoujesus and all maths guru

Half angle formula
Re: Nairaland Mathematics Clinic by mathefaro(m): 7:32pm On Feb 25, 2017
thankyouJesus:


Half angle formula
My boss has spoken, there's nothing else I can do
Re: Nairaland Mathematics Clinic by mathefaro(m): 7:32pm On Feb 25, 2017
Olarewajub:
Please i need assistance with interpretation of this question.

A point A and B divide the line joining P (3,2) and Q (7,9),internally and externally in the ratio of 5:4 respectively. Find the coordinates of A and B.


Will i be right if i say m=5 and n=4?
yes you're right
Re: Nairaland Mathematics Clinic by quitereal6: 10:48pm On Feb 27, 2017
thankyouJesus:


Half angle formula
Thanks boss.
Re: Nairaland Mathematics Clinic by Nobody: 6:24am On Feb 28, 2017
thankyouJesus:


Half angle formula
Re: Nairaland Mathematics Clinic by Bennystrings(m): 5:03pm On Mar 03, 2017
Suppose that f(x) = 1/x+1 and g(x) = 4/x+1. Find the domain of each of the composition
a) f o g
b) f o f
Re: Nairaland Mathematics Clinic by benji93: 5:11am On Mar 05, 2017
dyshow:
I want to believe that there are real mathematicians in
this group. So I wanna share my recent exam questions with
them nd see who can solve it!!!
your questions are not clear
Re: Nairaland Mathematics Clinic by hammmedb: 10:45am On Mar 05, 2017
3raise to power of 2x=8x find x
Re: Nairaland Mathematics Clinic by naturalwaves: 12:52am On Mar 06, 2017
Bennystrings:
Suppose that f(x) = 1/x+1 and g(x) = 4/x+1. Find the domain of each of the composition
a) f o g
b) f o f
The domain of f(x) is all real numbers EXCEPT -1
The domain of g(x) is all real numbers EXCEPT -1
a) f o g implies f(g(x)
= f(4 /x+1)
Recall that f(x)= 1/ x+1. what this means in simple terms is that f of anything, is 1/ ( that thing +1)
Therefore, f( 4/ x+1) = 1/ ( 4/ (x+1) + 1). This will finally give (x+1) / (5+ x) as the final answer.


b) f o f? First time I am seeing this kind but if the question does not have an error, then f of = f( f(x)
= f ( 1/ (x+1)) = 1/ (1/ (x+1) + 1)
= (x+1)/ (2+x).
Would have taken a snap shot of the solutions but my phones have been stolen. Had to manage to type it out.
cheers!

1 Like

Re: Nairaland Mathematics Clinic by Hadampson(m): 9:32am On Mar 06, 2017
Mathschic, where are thou
Re: Nairaland Mathematics Clinic by MathsChic(f): 9:39am On Mar 06, 2017
Hadampson:
Mathschic, where are thou
Right here. Went on some long trip embarassed
Re: Nairaland Mathematics Clinic by MathsChic(f): 9:40am On Mar 06, 2017
hammmedb:
3raise to power of 2x=8x find x
This question keeps popping up. I thought we thrashed it out months ago.
Re: Nairaland Mathematics Clinic by ToyinDipo(m): 9:43am On Mar 06, 2017
MathsChic:

This question keeps popping up. I thought we thrashed it out months ago.
Hollering
Re: Nairaland Mathematics Clinic by naturalwaves: 10:12am On Mar 06, 2017
MathsChic:

This question keeps popping up. I thought we thrashed it out months ago.
Hey! How have you been? Really been a long time. Missed seeing your solutions here. Stick around more often to help people with their problems o. I just checked in yesterday and laid my hands on something I could help with. I wish I have enough time to always check in. Have a nice day!
Re: Nairaland Mathematics Clinic by Hadampson(m): 11:31am On Mar 06, 2017
MathsChic:
Right here. Went on some long trip embarassed
Wow!! Itz bin a long fasmiley Hw waz ur trip?
Re: Nairaland Mathematics Clinic by Nobody: 12:13pm On Mar 06, 2017
utme maths loading..........
Re: Nairaland Mathematics Clinic by MathsChic(f): 1:19pm On Mar 06, 2017
naturalwaves:

Hey! How have you been? Really been a long time. Missed seeing your solutions here. Stick around more often to help people with their problems o. I just checked in yesterday and laid my hands on something I could help with. I wish I have enough time to always check in. Have a nice day!
Hey naturalwaves. Been a long time indeed. I've been good. Only busy.
Yeah, I'll stick around more often. Need to hone my maths skills. You good too?

1 Like

Re: Nairaland Mathematics Clinic by MathsChic(f): 1:20pm On Mar 06, 2017
Hadampson:
Wow!!
Itz bin a long fasmiley
Hw waz ur trip?
Good good. At least I got that behind me now.
You doing great as well?
Re: Nairaland Mathematics Clinic by MathsChic(f): 1:20pm On Mar 06, 2017
nnamdi1998:
utme maths loading..........
Bring em on smiley
Re: Nairaland Mathematics Clinic by Hadampson(m): 1:46pm On Mar 06, 2017
MathsChic:

Good good. At least I got that behind me now.
You doing great as well?
Yeah as always.. Good to have you back.. Mind if i invite you for a story?? wink
Re: Nairaland Mathematics Clinic by Hadampson(m): 1:57pm On Mar 06, 2017
Hadampson:
Gurus in the house, please help me with diz question on sum of geometric progression... IN AN EXPONENTIAL SERIES OF INCREASING POSITIVE TERMS, THE SUM OF THE FIRST SIX TERMS IS NINE TIMES THE SUM OF THE FIRST THREE TERMS. THE SUM OF THE FOURTH AND THE FIFTH TERM IS 120... FIND THE
(1) CONSTANT RATIO

(2) FIRST TERM

(3) SUM OF THE FIRST TWENTY TERMS.
Mathschic please help
Re: Nairaland Mathematics Clinic by naturalwaves: 2:13pm On Mar 06, 2017
MathsChic:

Hey naturalwaves. Been a long time indeed. I've been good. Only busy.
Yeah, I'll stick around more often. Need to hone my maths skills. You good too?
yeah yeah. I am very good. Thank you.
Re: Nairaland Mathematics Clinic by naturalwaves: 4:03pm On Mar 06, 2017
Hadampson:
Gurus in the house, please help me with diz question on sum of geometric progression... IN AN EXPONENTIAL SERIES OF INCREASING POSITIVE TERMS, THE SUM OF THE FIRST SIX TERMS IS NINE TIMES THE SUM OF THE FIRST THREE TERMS. THE SUM OF THE FOURTH AND THE FIFTH TERM IS 120. FIND THE
(1) CONSTANT RATIO
(2) FIRST TERM
(3) SUM OF THE FIRST TWENTY TERMS.
The questions were not rightly stated. Questions should come in plural form. I will upload the solution now.

Re: Nairaland Mathematics Clinic by Hadampson(m): 4:19pm On Mar 06, 2017
naturalwaves:

The questions were not rightly stated. Questions should come in plural form. I will upload the solution now.

I can't see the workings very well.. please can you type it instead?
Re: Nairaland Mathematics Clinic by naturalwaves: 4:28pm On Mar 06, 2017
Question 3.

Re: Nairaland Mathematics Clinic by naturalwaves: 4:33pm On Mar 06, 2017
Hadampson:
I can't see the workings very well.. please can you type it instead?
If you use an android phone, just expand the screen, you will see the solutions clearly.The phone I used was not too good and it cannot be typed .

I got 2 set of solutions but only one set is correct .
The final set of answers is
Constant ratio = 2
First term = 5
Sum of first 20 terms = 5242875.
Re: Nairaland Mathematics Clinic by hammmedb: 4:35pm On Mar 06, 2017
MathsChic:

This question keeps popping up. I thought we thrashed it out months ago.
iwasnt here then can you plz help out

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