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## #1 2013-03-02 10:34:58

Winx89
Member
Registered: 2013-03-02
Posts: 1

### Sigma notation and its application to binomials with exponents

Hi

I have a certain problem that I hope you can help me out with it is a binomial like in the examples however the internal terms already have exponents. (4x3-1/root x)8. Sorry not very clear, tablet has limited keyboard but in words, open bracket four x to the power of three minus one over the square root of x, closed bracket to the power of eight. They are asking for the coefficient of the xterm to the power of 3, 5 and 10 respectively.

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## #2 2013-03-02 11:22:18

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,429

### Re: Sigma notation and its application to binomials with exponents

Hi;

Is this what you are talking about?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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## #3 2013-03-02 11:28:10

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,030

### Re: Sigma notation and its application to binomials with exponents

Hi bobbym

I think it's

inside the brackets.

Last edited by anonimnystefy (2013-03-02 11:29:42)

Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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## #4 2013-03-02 11:29:23

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,429

### Re: Sigma notation and its application to binomials with exponents

Shouldn't that be 4x^3?

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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## #5 2013-03-02 11:30:35

anonimnystefy
Real Member
From: Harlan's World
Registered: 2011-05-23
Posts: 16,030

### Re: Sigma notation and its application to binomials with exponents

You should really wait till I edit the post, which I have now done.

Here lies the reader who will never open this book. He is forever dead.
Taking a new step, uttering a new word, is what people fear most. ― Fyodor Dostoyevsky, Crime and Punishment
The knowledge of some things as a function of age is a delta function.

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## #6 2013-03-02 11:37:37

bobbym
bumpkin
From: Bumpkinland
Registered: 2009-04-12
Posts: 109,429

### Re: Sigma notation and its application to binomials with exponents

Okay, hope you are right!

Coefficient of x^3 is 448

Coefficient of x^5 is 0

Coefficient of x^10 is 17920

In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.

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