Nairaland Mathematics Clinic - Education (228)

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Nairaland Mathematics Clinic - Education (228) - Nairaland

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Re: Nairaland Mathematics Clinic by LordeCalifornia: 4:18pm On May 23, 2016

Joe82834:
Well I think a shd be 2

I'm more than grateful, kind sir. thank you very much.

Re: Nairaland Mathematics Clinic by Joe82834(m): 6:37am On May 24, 2016

LordeCalifornia:

I'm more than grateful, kind sir. thank you very much.

You are welcome.Nice signature

Re: Nairaland Mathematics Clinic by Nobody: 3:46pm On May 24, 2016

Hi there! Pls I need ur help. This question seems confusing to me. Can anyone help me out??

Re: Nairaland Mathematics Clinic by thankyouJesus(m): 8:49pm On May 24, 2016

Masterkolinks:
Hi there! Pls I need ur help. This question seems confusing to me. Can anyone help me out??

https://answers.yahoo.com/question/index?qid=1006060303155 go here for answer

Re: Nairaland Mathematics Clinic by Nobody: 9:21am On May 25, 2016

thankyouJesus:
https://answers.yahoo.com/question/index?qid=1006060303155 go here for answer

Thanks bro!! I've gotten it..

Re: Nairaland Mathematics Clinic by Joe82834(m): 4:44am On May 26, 2016

Masterkolinks:

Thanks bro!! I've gotten it..

thankyouJesus:
https://answers.yahoo.com/question/index?qid=1006060303155 go here for answer

It means u dropped d wrong question bro.In ur question u said x,y,z are in AP and not log x,log y,log z.entirely different as its easy to use arithmetic mean method on log x,log y,log z to arrive at a geometric mean of y^2 = xz and not d other way.so d question initially dropped is incorrect. Tanx

Re: Nairaland Mathematics Clinic by dprinz99(m): 11:39pm On May 27, 2016

My gurus,kudus to yha

pls solve this questions
1)square root x+8=2x,find x
2)square root x+7+1=2x,find x
pls note,for n.2,square root covers x+7 alone
3)sqr rootx+-6 +sqr root1-x=sqr root 2x-5
4)2^x-2^x-2=3

5)2^x=3+2^2-x

6)2^x+1-2^x-1+4•2^1-x=8

7)sqr root[3x+1]-sqr root [x+4]=1

more questions loading ,thanks

Re: Nairaland Mathematics Clinic by Joe82834(m): 12:33am On May 28, 2016

dprinz99:
My gurus,kudus to yha

pls solve this questions
1)square root x+8=2x,find x
2)square root x+7+1=2x,find x
pls note,for n.2,square root covers x+7 alone
3)sqr rootx+-6 +sqr root1-x=sqr root 2x-5
4)2^x-2^x-2=3

5)2^x=3+2^2-x

6)2^x+1-2^x-1+4•2^1-x=8

7)sqr root[3x+1]-sqr root [x+4]=1

more questions loading ,thanks

Sir,kindly write them down,snap n upload for better comprehension. But make I pip into some of them as e de hot

Re: Nairaland Mathematics Clinic by thankyouJesus(m): 7:39am On May 31, 2016

dprinz99:
My gurus,kudus to yha

pls solve this questions
1)square root x+8=2x,find x
2)square root x+7+1=2x,find x
pls note,for n.2,square root covers x+7 alone
3)sqr rootx+-6 +sqr root1-x=sqr root 2x-5
4)2^x-2^x-2=3

5)2^x=3+2^2-x

6)2^x+1-2^x-1+4•2^1-x=8

7)sqr root[3x+1]-sqr root [x+4]=1

more questions loading ,thanks

Will love you to snap and post, while waiting for that. To solve any of the questions, take any variables/numbers without square root to the other side, from there, square both sides to eliminate the square root.

Re: Nairaland Mathematics Clinic by Umartins1(m): 5:01pm On May 31, 2016

thankyouJesus:
Will love you to snap and post, while waiting for that. To solve any of the questions, take any variables/numbers without square root to the other side, from there, square both sides to eliminate the square root.

Oga, if you sabi am, just solve am give the guy.

Besides, imma give it a try. Just seeing it

Re: Nairaland Mathematics Clinic by Umartins1(m): 5:43pm On May 31, 2016

Re: Nairaland Mathematics Clinic by Umartins1(m): 5:48pm On May 31, 2016

dprinz99:
My gurus,kudus to yha

pls solve this questions
1)square root x+8=2x,find x
2)square root x+7+1=2x,find x
pls note,for n.2,square root covers x+7 alone
3)sqr rootx+-6 +sqr root1-x=sqr root 2x-5
4)2^x-2^x-2=3

5)2^x=3+2^2-x

6)2^x+1-2^x-1+4•2^1-x=8

7)sqr root[3x+1]-sqr root [x+4]=1

more questions loading ,thanks

Oga, na one by one I dey do am.

However, that number one, I no get factors, na to use quadratic formular and me no get calculator for here. So I start from number two.

Click on that attached file

Re: Nairaland Mathematics Clinic by thankyouJesus(m): 9:04pm On May 31, 2016

Joe82834:

Sir,kindly write them down,snap n upload for better comprehension. But make I pip into some of them as e de hot

you no comment for this one ba

Umartins1:

Oga, if you sabi am, just solve am give the guy.

Besides, imma give it a try. Just seeing it

no vex if I don ever offend you before, your write up (tone) too harsh.

Re: Nairaland Mathematics Clinic by Joe82834(m): 12:33am On Jun 01, 2016

thankyouJesus:
you no comment for this one ba.

Lols u re funny.solved them but hv bn busy.will upload d pix
****Modified
Are u OK now, lols

Re: Nairaland Mathematics Clinic by Joe82834(m): 12:57am On Jun 01, 2016

Rewrite number 3 cos I can see two different signs.

Re: Nairaland Mathematics Clinic by thankyouJesus(m): 7:15am On Jun 01, 2016

Joe82834:
Lols u re funny.solved them but hv bn busy.will upload d pix ****Modified Are u OK now, lols

1 Like

Re: Nairaland Mathematics Clinic by Joe82834(m): 9:45am On Jun 01, 2016

[quote author=thankyouJesus post=46160344][/quote]
U just quoted me without a comment.

Re: Nairaland Mathematics Clinic by seuntosyn: 9:47am On Jul 02, 2016

help slove this: find the values of x for which
√x -2√x+5=8 note the square root covers x+5
√x +2√x+7 =11 the squr root covers x+7

Re: Nairaland Mathematics Clinic by DatechMan(m): 12:16pm On Jul 02, 2016

seuntosyn:
help slove this: find the values of x for which
√x -2√x+5=8 note the square root covers x+5
√x +2√x+7 =11 the squr root covers x+7

Square both sides. Rearrange and square again. Then solve resulting quadratic equations.

Re: Nairaland Mathematics Clinic by Mathemagician1(m): 12:34pm On Jul 02, 2016

seuntosyn:
help slove this: find the values of x for which
√x -2√x+5=8 note the square root covers x+5
√x +2√x+7 =11 the squr root covers x+7

(1) x=4 or x=484/9
(2) x=9 or x=961/9

1 Like

Re: Nairaland Mathematics Clinic by seuntosyn: 2:51pm On Jul 02, 2016

Mathemagician1:

(1) x=4 or x=484/9 (2) x=9 or x=961/9

Thanks

Re: Nairaland Mathematics Clinic by agentofchange1(m): 8:52pm On Jul 02, 2016

I greet all great men here.....

Re: Nairaland Mathematics Clinic by agentofchange1(m): 8:54pm On Jul 02, 2016

its been a while ........great job o...
so, whats cooking ...?

Re: Nairaland Mathematics Clinic by GreatYinkus(m): 4:46pm On Jul 04, 2016

Please help to solve;
(1). If F(1)=2 and F(n) = F(n-1) + 1/2 for all integers n>1, then F(101) =??
(2). A drawer contains 2 blue, 4 red, and 2 yellow socks. If 2 socks are to be randomly selected from the drawer, what is the probability that they will be the same color?
(3). Evaluate £(k=1, -> infinity) {k^2/k!} where £ rep sigma as summation
Solve any one you could(with solutions ), expecting answers ASAP.
Cc. Agentofchange1 , Richiez, mathemagician etc Thanks.

Re: Nairaland Mathematics Clinic by agentofchange1(m): 7:48pm On Jul 04, 2016

GreatYinkus:
Please help to solve;
(1). If F(1)=2 and F(n) = F(n-1) + 1/2 for all integers n>1, then F(101) =??
(2). A drawer contains 2 blue, 4 red, and 2 yellow socks. If 2 socks are to be randomly selected from the drawer, what is the probability that they will be the same color?
(3). Evaluate £(k=1, -> infinity) {k^2/k!} where £ rep sigma as summation
Solve any one you could(with solutions ), expecting answers ASAP.
Cc. Agentofchange1 , Richiez, mathemagician etc Thanks.

1) 52
2) Wr ....1/4= 0.25 wor...=2/7= 0.2857

3 ) 2e

workings

[b]
Q1 By analyzing the first few terms of this recursive function, the terms are. 2, 2.5, 3, 3.5, ...

It can be concluded that the closed formula for the recursive function is

C(n) = 2 + 0.5(n-1) for n >= 1 where n is an integer.

C(n) = 2 + 0.5(101-1) for n >= 1 where n is an integer.

C(n) = 2 + 0.5(100) for n >= 1 where n is an integer.

C(n) = 2 + 50 for n >= 1 where n is an integer.

Thus C(101) = 52

So f(101) = 52

A proof by induction can easily show the correctness of this closed function but this is another question entirely.

OR
This is an arithmetic progression, with a = 2, d = 1/2

F(n) = a + (n - 1)d

Where, a = 2, d = 1/2 and n = 101

F(n) = 2 + 1/2 (n − 1)

F(101) = 2 + 1/2 (100)

F(101) = 2 + 50

F(101) = 52

Q2 I would assume the selection was done without replacement..

2blues
4reds
2yellows

total of 8socks

picking same color. , could be ( bb or rr or yy )

i.e pr(bb)+pr(rr)+pr(yy)

=> ( 2/7 x1/7) +( 4/8 x3/7) +(2/8 x1/7) = 16/56 =2/7

Q3 Σ = sigma

e^x = 1 + x + x²/2! + x³/3! + x⁴/4! + .....

e^x = Σ [n = 0 to ∞] x^n/n!

e^x = Σ [n = 0 to ∞] 1/n!

Σ [k = 1 to ∞] k²/k!

= Σ [k = 1 to ∞] (k²−k+k)/k!

= Σ [k = 1 to ∞] (k(k−1)+k)/k!

= Σ [k = 1 to ∞] k(k−1)/k! + Σ [k = 1 to ∞] k/k!

= Σ [k = 2 to ∞] k(k−1)/(k(k−1)(k−2)!) + Σ [k = 1 to ∞] k/(k(k−1)!)

= Σ [k = 2 to ∞] 1(k−2)! + Σ [k = 1 to ∞] 1/(k−1)!

= Σ [n = 0 to ∞] 1/n! + Σ [n = 0 to ∞] 1/n!

= 2e

OR

k² = k(k-1) + k

=> sum ( k²/k! ) = sum( k(k-1)/k! ) + sum ( k/k! )

= sum( 1/(k-2)! ) + sum (1/(k-1)! )

= e - 2 + e + 1 + 1

= 2e - 2 + 2

= 2e

with e = Euler's number = 2.71828...[/b]

guess that's. it .

hope you get ?

1 Like 1 Share

Re: Nairaland Mathematics Clinic by GreatYinkus(m): 8:50pm On Jul 04, 2016

I get. Thanks very much, God will continue to bless your works.

Re: Nairaland Mathematics Clinic by GreatYinkus(m): 8:51pm On Jul 04, 2016

I get. Thanks very much, God will continue to bless your works @ agentofchange1

Re: Nairaland Mathematics Clinic by agentofchange1(m): 10:54pm On Jul 05, 2016

GreatYinkus:
I get. Thanks very much, God will continue to bless your works @ agentofchange1

ur most welcome. brother. ..

and you too. ..

Re: Nairaland Mathematics Clinic by Talkwisdom(m): 11:10pm On Jul 05, 2016

I need someone who can teach Ordinary Differential Equations immediately

Quote me if you can assist.I don't mind if money is involve

Re: Nairaland Mathematics Clinic by agentofchange1(m): 8:12am On Jul 06, 2016

Talkwisdom:
I need someone who can teach Ordinary Differential Equations immediately

Quote me if you can assist.I don't mind if money is involve

what level. .?

whats the deal ?

Re: Nairaland Mathematics Clinic by Talkwisdom(m): 8:47am On Jul 06, 2016

agentofchange1:

what level. .?

whats the deal ?

Your phone number or email address.. Let me contact you immediately.

It is first order and second order differential equations for 200level

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