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August 24th, 2012, 12:05 AM   #1
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Partial Fraction

Hi,my name is Lvee..
Can anyone who expert in Partial Fraction Question teach me about this kind of question?
i still cannot understand it...TQ
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August 24th, 2012, 12:22 AM   #2
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Re: Partial Fraction

What is the question, and I will move it to the appropriate forum and help with the question...

Is it perhaps the question posted in this topic?
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August 24th, 2012, 01:12 PM   #3
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Re: Partial Fraction

The question is....

Express the fraction (20x^2+/(3x+1)(x+1)^2 as a sum of partial fractions.

It will be,
(20x^2+/(3x+1)(x+1)^2=(A/3x+1)+(B/(x+1)+(C/(x+1)^2

My question is why it become like this (A/3x+1)+(B/(x+1)+(C/(x+1)^2?
(I mean with the constant A,B,C.)

Thank you :P :P
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August 24th, 2012, 02:53 PM   #4
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What alternatives could there be?
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August 24th, 2012, 10:43 PM   #5
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Re: Partial Fraction

This site has a good explanation with examples, look at it then let me know if you still have questions.

http://www.purplemath.com/modules/partfrac.htm

I quote from the site

"Sometimes a factor in the denominator occurs more than once. For instance, in the fraction 13/24, the denominator 24 factors as 2󫎾3. The factor 2爋ccurs three times. To get the 13/24, there may have been a 1/2 or a 1/4爋r a 1/8 that was included in the original addition. You can't tell by looking at the final result.

In the same way, if a rational expression has a repeated factor in the denominator, you can't tell, just by looking, which denominators might have been included in the original addition. You have to account for every possibility."


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August 25th, 2012, 02:01 AM   #6
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Re: Partial Fraction

Thank you agentredlum
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August 26th, 2012, 07:19 AM   #7
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Re: Partial Fraction

Feel free to post a question okay...
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August 26th, 2012, 12:02 PM   #8
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Re: Partial Fraction

Quote:
Originally Posted by Lvee
Feel free to post a question okay...
Okay... this question is for Lvee... please show all steps.

Find a partial fraction decomposition of

let me know if you get stuck and I will help you get unstuck.

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