@rhydex, solution to a^2 + b^2 = 4ab, evaluate a +b/a-b

a^2 + b^2 = (a + b)^2 -2ab

Thus, 4ab = (a+ b)^2 - 2ab
(a + b)^2 = 6ab
(a +b) =sqr (6ab)

But (a -b)^2 = a^2 + b^2 -2ab
(a-b)^2 =4ab -2ab=2ab
(a -b) = sqr (2ab)

Thus, (a +b)/(a-b) = sqr (6ab)/ sqr (2ab)
=sqr(3). Simple.
The five stars math general

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Rhydex the solution to 3^x + 4^x = 5^x can be done analytically and graphically. What i need from is the analytical solution since u claim to be a five star math general

@moneybag

There are some school in finland dat accept a good sat score to pursue a bachelor degree in economics and business economics and internation business in english with scholartic assessment test which can be taken here in nigeria. u donot need to travel to ghana for any entrance exam.

Am still expecting solution to 3^x + 4^x = 5^x

@arokan' d

Do u have gre review book from the original test maker. It is the collection of past question of the past several years from the original test marker. U really need to get the book in addition to the one you have. You need ecclectic sources of material to smash gre and try and read news paper and magazine as it will help you in you analysis of issues and analysis of argument.

Differentiate y=x^x^x^x^ and so on with respect to x.

Analysis

y= x^x^x^x^x and so on

Thus, y=x^y

Introduce in to both sides:

In y= in x^y

Iny=yinx

Differentiate both sides:

i/y dy/dx = y * i/x inx * dy/dx (product rule)

Collect like terms:
dy/dx( 1/y -inx) = y/x
dy/dx =y/x/ (1/y - inx)
Simple, the math general.

@Rhydex,

You are totally wrong, math major. You are not a math general yet. Keep trying your best.

The question still read differentiate y= x raise x raise x raise x raise x and so on with respect to x.

most all the regions in nigeria have experiened one state of emergency or the other but the south- south and south - east regions has been insulated from state of emergencies. The south west region has had a fair share of 3 states of emergencies and the north central, 2, the north west, 1 and north- east 2. What are the factors dat are responsible for non declaration of the state of emergencies in these two regions from independance to date? And which region is the most stable region in the long term?

I donot know how good ur grade in wassce is. If u have excellent grade, u can enjoy free education in germany and finland especially courses in resource and environmental management (germany) and economics and business economic and internation economics tru scholastic assessment test (finland)

What u guys donot know is dat toefl exam need u to know the format of the exam and also hw to use the cd to practice and assess ur english proficiency skills. The soft copy of the materia doesnot contain much information and practice on listening and speaking section of the toefl exam.. Dat is why it is very important for you to get a material dat contain both the format of the test and cd for practice . The exam is internet based exam involving the assessment of four skills, especially reading, listening, speaking and writing skills

Differentiate y= x^x^x^x^x to infinte with respect to x . I pose dis question to the math general

Do u mean tuition fee not more than 100,000 naira

Georgia and ukraine should be the country dat you can go. Rule out western europe from your choice of school destination. U still need to have five o level credits. Are u interested in these two countries

@freestuff

How can i show proof of the product and service that i render online by providing a link to enable me activate my payoneer card? i will like you to share more light in this regards

To start with, i would like to ask you some relevance questions. Some of which are as follows:

What programme particularly bachelor, master or phd do you want to study in europe?

Which of the country in the europe (e.g. Czech, netherland, finland, united kingdom, sweden and others) do u prefer?

What is your budget?

what is your qualification?

Answer to these questions will guide me to amke a sound decision for you. Thanks and i look forward to hearing from u.

@worldlife

Q(x)= 8x-0:04x^2

dq(x)/dx= 8-0.08x

At the turning point, dq(x)/dx=0

8-0.08x=0, x=8/0.08=100
The number of item sold for max profit = 100,
The max profit = 8(100)- 0:04 (100)^2=400

Q(a) the number of men dat re lecturer is 11. U are going to use a lattice diagram to solve the problem

The number of women dat are lecturer =79-52= 27

Since the sume of women lecturer and men lecturer = 38, the number of men lecturer = 38-27=11. Simple.

@worldlife,

Limit x3 -6x + 2/ -x2+x +9
X=-1

Put x=-1, (-1)^3 -6(-1) +2 / - (-1)^2 + (-1) + 9

Answer is 7/7=1

Q2(a),

Y= 2x^3 -5x^2 + 4x -1

dy/dx=6x^2-10x + 4

At the stationary point, dy/dx =0

6x^2- 10x + 4= 0

6x^2 -6x -4x + 4=0

6x (x-1) -4(x-1)=0
(6x-4)(x-1)=0
x=1 or x=4/6=2/3

But, d^2y/dx^2 = 12x-10

Wen x=1, d^2y/dx^2= 12(1)-10=2 (minimum becos d^2y/dx^2 >0

Ymin= 2(1)^3 -5(1)^2 +4(1)-1=0

Ymax=2(2/3)^3 -5(2/3)^2 + 4(2/3)-1
. Calculate it

y=x^4+2x^3- 3x^2 -4x 6.

dy/dx=4x^3+6x^2-6x-4.

d^2y/dx^2= 12x^2 +12x-6.

d^3y/dx3= 24x- 12

Since d^3y/dx^3=0,

24x-12=0
X=-12/24=-1/2. right on board, the math doctor

Solve the exponential equation: 3^x + 4^x = 5^x

@benbuk, i need u to solve the problem not just giving me the answer to the problem. I need the working of the problem.

let me give you some tricks on how 9 with other numbers without the use of calculator

Here we go

Case1= 9 x 2

Step1: subtract 1from 2 and u get 1. Write it down as the tenth digit

Step 2: think of a number dat u will add to 1 to get 9 and the result is 8. Write it down as the unit digit

Therefore, the answer for 9x 2 = 18

Case 2: 9 x 3

Step 1: subtract 1 from 3 and u get 2. Write it down as the tenth digit.

Step 2: think of a number dat will be added to 2 to get 9 n the result will be 7 . Write it down as the unit digit.

Therefore, the answer for 9 x 3 = 27

U like the tricks . Try and do the following practice drills

1.9 x 5=

2. 9 x 8=

Proof dat 1 = 2,

You know dat a^2- a^2= 0

Then a^2 - a^2=a (a - a) ( by factorising)

But a^2 - a^2 = (a - a) (a + a) (difference of two square)

Therefore, a(a - a) = (a- a) (a +a)
a= (a+a)
a=2a
1=2
NEED ANSWER TO MY PREVIOUS EQUATIONS

U can blast your toefl and gre by using supplementary material in addition to soft copy. U can try and purchase textbook such as barron, kaplan and princeton materials for toefl and gre and u will smash ur exam with top score. Visit bookshop at yaba market and get the material from there. Pls, note every materials come along with a cd. If u have aany question with regards to studying in the usa with reseach or scholarship assistance or recomended materials to pass american entrance exam particularly gre, toefl, gmat, mcat and lsat, feel free to post ur question on this thread

I am going to teach you some tricks in muiltipying numbers without the use of calculator. Here we go

Multiplying 11 with other numbers

For example,

Case1:11 x 13

Step 1: write down the unit digit which is 3
Step2: add 3 to 1 and u will have 4
Step 3: write down 1 and u will have 1.

Therefore, the answer is 143.

Case2: 11 x 14423

Step1: write down 3 as the unit digit n u have 3
Step2: add 3 to 2 and u will have 5
Step 3: add 2 to 4 and u will have 6
Step 4: add 4 to 4 and u will have 8
Step 5: add 4 to 1 and u will have 5
Step 6: write down 1 and u will have 1
Therefore, the answer is 158653.

Prove that 2=1

Solve d equation: 4^x = 8x

Solve dis exponetial equation:3^x + 4^x = 5^x.