# c4: quick question re: partial fractions

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#1
Hi,

If I have a fraction, say because I have a squared term in the denominator, would the fraction be equivalent to ?

Is the above the best way (only way?) to do it?

Thanks
0
8 years ago
#2
(Original post by marcsaccount)
Hi,

If I have a fraction, say because I have a squared term in the denominator, would the fraction be equivalent to ?

Is the above the best way (only way?) to do it?

Thanks
That doesn't give you the right denominator. You only have linear terms so the partial fractions are

If we combine your terms we get where
0
#3
(Original post by atsruser)
That doesn't give you the right denominator. You only have linear terms so the partial fractions are

If we combine your terms we get where

Hi - thanks for your help. I thought it was a repeated term because if the bracket is expanded the denominator would be , but this isn't a repeated term?
0
8 years ago
#4
It would be repeated if it was as you see the is repeated twice due to the second order.
0
8 years ago
#5
(Original post by marcsaccount)
Hi - thanks for your help. I thought it was a repeated term because if the bracket is expanded the denominator would be , but this isn't a repeated term?
You are looking for terms that are multiplied in the denominator, not added or subtracted, due to the way fractions with different denominators are added - think about finding a common denominator when adding fractions:

Note that we multiplied, not added, the denominators.
0
#6
OK, it's clear now, thanks for your help
0
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