I have a BIG PROBLEM, i have an exam tomorrow IN MATH

[Vskz0]

hello to everyone, WHO CAN HELP ME!?


i have an exam tomorrow in morning, and i need an solution of a math problem now, if can some one help me with the solution


The Problem is :

8. Geometric progression is given to four members. If the members of this progression were added respectively 2,4,5 and 4, then won arithmetic progression. Find these Numbers?!?



Can someone DO IT?

Thanks in Advance!

 

[JaredJames]

Are you going to attempt to show a solution? (You need to).

Probably shouldn't have left it this late.

 

[Mark44]

hello to everyone, WHO CAN HELP ME!?


i have an exam tomorrow in morning, and i need an solution of a math problem now, if can some one help me with the solution


The Problem is :

8. Geometric progression is given to four members. If the members of this progression were added respectively 2,4,5 and 4, then won arithmetic progression. Find these Numbers?!?

What does this mean? It looks like there are words missing.
"Geometric progression is given to four members." = ??
"If the members of this progression were added respectively 2,4,5 and 4" Are you saying that a₁ = 2, a₁ + a₂ = 4, a₁ + a₂ + a₃= 5, and a₁ + a₂ + a₃ + a₄= 4?
"then won arithmetic progression" - ?

Can someone DO IT?

Sure, someone can do it, but that's not the way it works here. Before we give any help, you need to show an effort at solving the problem.

 

[Vskz0]

Listen,
Our proff, has gave us the Geometric Progression with 4 members,if members of these Geometric progression will be added 2,4,5 and 4, then will get an Aritemic Progression
Find these numbers. / Find these numbers that will WIN THE ARITEMIC progression! which are these numbers?

With my words:
he has give us the geometric progression as unknown, and with these Geometric members 2,4,5, and 4 we need get/find Aritemic Progression.

Sorry, that's why i don't understand too, beacuse its a hard question lol,

 

[gb7nash]

I read the problem 5 times and I still can't figure out what the OP's asking. I googled geometric progression and it's analogous to a geometric sequence of numbers. However, when I googled arithmetic progression, it talks about a sequence of numbers such that the difference of any two successive members of the sequence is the same constant. Then you're adding numbers to the progression?

Retype the problem with a clear head and attempt to solve it on here. You'll get better results.

 

[Mark44]

I read the problem 5 times and I still can't figure out what the OP's asking. I googled geometric progression and it's analogous to a geometric sequence of numbers. However, when I googled arithmetic progression, it talks about a sequence of numbers such that the difference of any two successive members of the sequence is the same constant. Then you're adding numbers to the progression?

Retype the problem with a clear head and attempt to solve it on here. You'll get better results.

Here's a geometric progression: 64, 32, 16, 8, 4, 2, 1, 1/2, ...
Here's an arithmetic progression: 1, 3, 5, 7, 9, ...

 

[Mark44]

Listen,
Our proff, has gave us the Geometric Progression with 4 members,if members of these Geometric progression will be added 2,4,5 and 4, then will get an Aritemic Progression
Find these numbers. / Find these numbers that will WIN THE ARITEMIC progression! which are these numbers?

With my words:
he has give us the geometric progression as unknown, and with these Geometric members 2,4,5, and 4 we need get/find Aritemic Progression.

Sorry, that's why i don't understand too, beacuse its a hard question lol,

I still don't understand what you are saying. What do you mean "WIN THE ARITEMIC progression"?

 

[Vskz0]

@Mark44,

u Solved it??

 

[Redbelly98]

@Mark44,

u Solved it??

There are two reasons why nobody has posted a solution to your problem:

1. It is against forum policy for members to post any help, until you show an attempt at solving the problem.

2. None of us have any idea what the question/problem is. You have not stated it clearly. Have you written exactly, word for word, what the problem is? Are you translating from a different language into English?

 

[gb7nash]

Here's a geometric progression: 64, 32, 16, 8, 4, 2, 1, 1/2, ...
Here's an arithmetic progression: 1, 3, 5, 7, 9, ...

Now add 2,4,5 and 4 to the geometric sequence. (whatever that means )

 

[Vskz0]

Geometric progression was given with four members.
If the members of this progression were added respectively 2,4,5 and 4, then we get arithmetic progression. Find those numbers that will get arithmetic progressionLOL, i can't understand it too, its just the problem that our proffesor gave to us to get the solution.

i don't know how to explain it better, beacuse he wrote the problem like this, i can't understand it too :(,So nobody Understand it also ?

 

[gb7nash]

Geometric progression was given with four members.
If the members of this progression were added respectively 2,4,5 and 4, then we get arithmetic progression. Find those numbers that will get arithmetic progression


LOL, i can't understand it too, its just the problem that our proffesor gave to us to get the solution.

i don't know how to explain it better, beacuse he wrote the problem like this, i can't understand it too :(,


So nobody Understand it also ?

I'll take a crack at this, but I'm really taking a shot in the dark here.

We have the following 4 member geometric progression:

a, ar , ar^2 , ar^3.

We now add 2,4,5,4 , so we have:

a + 2, ar + 4 , ar^2 + 5 , ar^3 + 4

Now, we have an arithmetic progression. So:

(ar + 4) - ( a+2 ) = b , (ar^2 + 5) - (ar + 4) = b , (ar^3 + 4) - (ar^2 + 5) = b

.
.
.

 

[Vskz0]

try if you can find solution for this problem :

1.)

Three numbers that have the Value/amount 15 will form Arithmetic Progression, find these numbers if the sum of their reciprocal values is 33/40

 

[Mark44]

gb7nash,
That seems like a reasonable start to it. You ended up with three equations in three unknowns, so a unique solution for a, r, and b seems possible.

 

[Vskz0]

Then mark44, can you please do it and post all the procedure of this problem ?

 

[JaredJames]

Then mark44, can you please do it and post all the procedure of this problem ?

You're not quite grasping the rules on this are you?

You must show your attempt.

 

[Redbelly98]

Then mark44, can you please do it and post all the procedure of this problem ?

No, but I can explain to you why Mark44 is not posting the procedure.

If you click where it says "Rules" at the top of this page, and then at that page scroll down to the section titled Homework Help, you will find the following statement about how to get help with any coursework problem at our forum:

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The part in red explains what you must do, that you have not done yet, in order to get more help here at this forum.

The part in blue explains why others are not simply posting the answer as you are asking them to do.

p.s. I'm okay with gb7nash's help in Post #12, given the confusion over what the question was in the first place. Now it's up to the OP, Vskz0, to show an attempt at solving it.