question 1d.. final answer (1 Viewer)

[cd285]

the lns got me confused in the end.
what was the final answer?

it was x-6/ x^2+3x-4

 

[kwabon]

cant remember exactly what i got but
i think its 2ln(3/4)

 

[Michaelmoo]

Yer thats wat I got.

 

[lolokay]

I screwed this question up. I originally read the -4 as a +4, so was starting a different method, but then realised it was a -4. so I had a combination of two different methods, which ended up being quite messy, and I don't think I ended up with the right answer

 

[Heshy]

i got like 2ln6 or something like that

 

[Aerath]

cant remember exactly what i got but
i think its 2ln(3/4)

EPIC.

But, I left it as ln(9/16). Reckon I'll lose any marks? =\

 

[kwabon]

EPIC.

But, I left it as ln(9/16). Reckon I'll lose any marks? =\

lol, getting too worked up aerath, its the same thing and u will not lose any marks.

 

[kwokie]

I did some insanely stupid method, i tried to make the top derivative of the bottom, then use reverse chain rule, then i proceeded to use partial fractions for the remainder and miraculously still ended up wtih same answer after about 1.5 pages. Would i still get full marks for that? I hope the marker understands what i did coz im quite messy.

 

[sillyboy]

lol it was easily done with quick inspection of partial fractions

 

[kwokie]

I realised that after i completed all that, for some stupid reason I looked at it once and thought it is not factorisable and thought its one of those with tan inverse and log one, but really fml wasted so much time there. I spent like 20+ mins on q1 and didnt get to start q8