Partial Fraction Confusion! (1 Viewer)

[sasquatch]

Ok fitzpatrick has confused the hell out of me. WIth partial fractions with a repeated denominator, e.g.

(3x² + 10x -5)/(x+1)²(x-2) it seperated them out as the following,

a/(x+1)² + b/(x+1) + c/(x-2), but the answer doesnt have b/(x+1)... So im confused..

 

[pLuvia]

That should be right though

 

[Roobs]

which question is it? we use fitzpatrick and ive just done partial fractions

 

[sasquatch]

Question 8, 33d..thanks

 

[hyparzero]

If you expand (3x² + 10x -5)/(x+1)²(x-2) using Partial Fractions, you should get:

4/(x + 1)² + 3/(x - 2)

 

[hyparzero]

is the answer:

-4/(x + 1) + 3ln(x - 2) + C?

Sorry, I dont have Fitzpatrick...

 

[sasquatch]

fuck yeah..im such a dickhead...it does equal zero...

 

[A l]

Don't stress out too much about it. Partial fractions with a repeated denominator are not in the course so you wouldn't really encounter such a question in the HSC exams.