₦airaland Forum

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Hesohjay: pls bros i scored 210 course physics. pls any coment

Your chance of getting admission is high. Please try to score more than 50 in your post utme

Op, you be Spiritual maga, dem slap you and you still pay 5k, I believe say you go even tell them 'thank you'.

Titanic
The notebook
Sweet november

In that order.

That was why I decided to study Mathematical science, I want to be relevant in science generally.

ositadima1: No fall hand ooo, like moi. You have the greatest study aid this days, yeah, the INTERNET. Brother everything is there. Even if u cant afford all required school books, with the internet in ur hands ur are king.

Bros you 're right, I apologise, I was merely joking

Krucifax: Okay here's one for the board. Solve below using equations of absolute value


a) | x | = 5

b) | x - 2 | = 7

c) | 89 x + 4 | = -2

d) | -11 x - 9 | = 0

e) 2 | x + 5 | = 10

f) 3 | -9 x - 7 | - 2 = 13

g) -5 | -x + 2 | + 8 = -12

h) | -3 x - 2 | / 3 = 7

i) | (x - 5) / 4 | = 6

j) | x + 1 | = |-4 x + 3|

k) | x + 3 | = - |-x - 3 |

Note: |x|=a then -a=x=a

A. |x|=5
-5=x or x=5

B. |x-2|=7
-7=x-2=7
-7=x-2 or x-2=7
-5=x or x=9

C. |89x+4|=-2
2=89x+4=-2
2=89x+4 or 89x+4=-2
X=-2/89 or x=-6/89
Absolute value not -ve
No solution

D. |-11x-9|=0
0=-11x-9=0
X=-9/11

E. 2|x+5|=10
Divide both sides by 2
|x+5|=5
-5=x+5=5
-5=x+5 or x+5=5
X=-10 or x=0

F. 3|-9x-7|-2=13
3|-9x-7|=15
Divide bothsides by 3
|-9x-7|=5
-5=-9x-7=5
-5=-9x-7 or -9x-7=5
X=-2/9 0r x=-12/9=-4/3

G. -5|-x+2|+8=-12
-5|-x+2|=-20
Divide both sides by -5
|-x+2|=4
-4=-x+2=4
-4=-x+2 or -x+2=4
X=6 or x=-2

H. |-3x-2|/3=7
Cross multiply
|-3x-2|=21
-21=-3x-2=21
-21=-3x-2 or -3x-2=21
X=19/3 or x= -23/3


I. |x-5|/4=6
Cross multiply
|x-5|=24
-24=x-5=24
-24=x-5 or x-5=24
X=-19 or x=29


J. |x+1|=|-4x+3|
-(-4x+3)=x+1=-4x+3
4x-3=x+1 or x+1=-4x+3
X=4/3 or x=2/5


K. |x+3|=-|-x-3|
-{-(-x-3)}=x+3=-(-x-3)
-x-3=x+3 or x+3=x+3
X=-3.

ositadima1: I am going to answer a few selected question, not easy to type this stuff on a phone.

(a) |x|=5

x=5 or -x=5
Two possible cases as absolute values are either positive or negative

x=5 or x=-5
(b) |x-2|=7

x-2=7 or -(x-2)=7
x=9 or x-2=-7
x=9 or x=-5
(c) |89x+4|=-2
No need solving ..

(d) |-11x-9|=0
-11x-9=0
x=-9/11
Now this big motherfu.cker
(j) |x+1|=|-4x+3|

x+1=|-4x+3|

x+1=-4x+3 or x+1=-(-4x+3)
5x=2 or x+1=4x-3
x=2/5 or 3x=4
x=2/5 or x=4/3

Ok, others are not as bad azz as this one^^^
NB: I left school with an excruciating 2 class lower.

Shey modulus come hard ni? You be graduate sef, I dey 100l dey complain say I no know maths.

Btw Kudos

dabrake: chei! Omo, . . .

He he, I don give up on the maths taytay.

dabrake: Truman, your question eh.

Have you solved truman question?

Truman155: If a+b+c=8, a^2+b^2+c^2=16 and a^3+ b^3+c^3=64 find a,b, and c.

Omo this your maths thick I must admit

BrutusOj: Waoo..nice tread.my gurus in d house,kindly make t d subject of d formular in d expresion below" s=ut+1/2at^2" I.e d second equation of motion(s=ut+half atsquare).am waitin

Completing the square method, that 's what you 'll use

Tolzeal: u the bos man...can u solve dz, prove that 2>n=n for al positv in integax

Please check the question again, I think it is proof that 2^n>n

dabrake: that's something about mathematics. I believe people say 0/0 = undefined because it can give you any value. Take for instance.

0/0 = (81 - 81)/(81 - 81) //81-81=0
=[(9 + 9)(9 - 9)]/9(9 -9) // 81 - 81 = 9² - 9²(law of difference of 2 squares)
=(9 + 9)(9 - 9)/9(9 -9)
=(9 + 9)/9
= 2

now saying 0/0 = 12
0/0 = (144-144)/(24-24) // 144-144 =0 ; 24-24 =0
= (12^2-12²)/2(12-12)
= (12+12)(12-12)/2(12-12)
= (12+12)/2
= 12


You see, you can always get any answer. Deceptive subject

Brother mathematics is not deceptive, because you can't get any constant value for a particular real number i.e a/b is what makes it UNDEFINED. Unlike 2/4=1/2, 0/0=undefined.

dabrake: @ op, show that 0/0 = 12

I believe that your equation is logically correct, if 0/0=c no matter the value of c you will still get the same answer. Therefore, 0/0 does not mean any particular number - or even anything until we give it some new meaning. And you my brother gave the value to be 12 and bro I can as well as you to cross multiply to make 0=0.
Bottom line is 0/0 is nothing

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

Ok thanks, your 2nd equation just help

SMH at people that doesns 't know what Ubuntu is.

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.
logx + logy = 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.

Bro pls I don 't understand how you got the fifth equation.

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It looks formal, even my friend complain that I behave like a matured man as I 'm still a teenager 'cos I store my friends name with their last name and first name, and I have a lot of Mr and Mrs on my list as well.

hazim: Say wetin na,... Hw much last

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hazim: @1stknight How much is ur e71
Cal or add me on watzapp 07035512841 mo talk wallah OK

Hazim, my phone is going for 15k

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tempex88: Exams are no thorough test of knowledge and i have discovered 70% of what is learnt in school is either obsolete or can not be applied in a real life situation.
Micheal Faraday had no formal Education
Aliko dangote had no formal education
Bill gates abadoned formal university education
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The list is endless
so for me education has nothing to do with smartness and brilliance

And who told you that Aliko Dangote had no formal education, you guys just look for a way to rubbish education, why don 't you talk about Alan Page and Sergey Brin(Google founders), 'cos they have phD in Computer science.