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Posts: 207

Threads: 48

Joined: Feb 2010

A further question: What is the difference between partfrac and cpartfrac?

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Thanks. Does CAS Settings / Simplify need to be set to NONE or MINIMUM for this result? Appears that MAXIMUM will show the rational being "recomposed" as x^3+x : x^2+3.

Best

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Joined: Sep 2011

Quote:

In CAS mode, use partfrac.

To see the results of polynomial long division, propfrac is more what he was looking for.

partfrac(((x^3+2*x²+3*x+4)/(x²-9))) returns the partial fractions

x+2+(29/3/(x-3))+7/3/(x+3)

while

propfrac(((x^3+2*x²+3*x+4)/(x²-9))) returns the proper fraction:

x+2+(12*x+22)/(x²-9)

-wes