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# C4 partisl fractions book answer wrong? watch

1. =

when

when

When Comparing Coefficients of i obtained
Which meant for my partial fractions i got:

however the book totally ignored my value for A and got

Am i correct or is the book correct?
2. (Original post by joyoustele)
=

when

when

When Comparing Coefficients of i obtained
Which meant for my partial fractions i got:

however the book totally ignored my value for A and got

Am i correct or is the book correct?
I got the same as the book when subbing in x values
3. (Original post by bruh2132)
I got the same as the book when subbing in x values
really? Okay i will have to see where i went wrong
4. (Original post by joyoustele)
...
Might wanna check how you got that again. It's not right.
5. check by putting a number for x into the original function and your new version. they should match.
6. (Original post by RDKGames)
Might wanna check how you got that again. It's not right.
comparing coefficient of

?? Is that not correct?
7. (Original post by joyoustele)

That 3 should be negative... check it.
8. (Original post by RDKGames)
That 3 should be negative... check it.
Damn. I wrote positive by mistake instead of a negative.
TY RDKGames

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