Spesh Exam

[jane1234]

I'm so paranoid... I'd like to think I got 40/40 but not too sure... probably more like 38-39 if I had written down an answer wrong or not shown enough working...

On the plus side, I nearly dropped a negative sign on Q5 - thank god I picked it up!

Overall, so glad there were no "cone of death"-type questions.

[b^3]

Dam I think I lost 2 marks. One on the question 4 polar thing, when I did the individual polar forms, II used an equivalent angle  and so the answer is out of whack. And I have a feeling I got the first question wrong. Does anyone remember what the equation was?

[funkyducky]

@jane1234: Now I can't remember if I had a -ve for q5 or not...

[kenny_]

@jane1234: Now I can't remember if I had a -ve for q5 or not...

what was q5?! now i can't remember if i had a -ve either D:

[paulsterio]

b^3, first question (1+x)/(9-x^2)

[BoredSatan]

b^3, first question (1+x)/(9-x^2)

did you guys seperate it right at the start? or times top and bottom by -2 at the start?

[Gaijin]

I think q5 was where you had to find dy/dx when (1,root3-3)

Since it didn't ask for a rationalised form even -1/(2root3) is fine right? That is what I got.

[davidle_10]

paulsterio can u tell me how many marks I might have lost?

[kenny_]

b^3, first question (1+x)/(9-x^2)

did you guys seperate it right at the start? or times top and bottom by -2 at the start?

I did partial fractions from the start

[Gaijin]

For q1 I separated them first

[jane1234]

@jane1234: Now I can't remember if I had a -ve for q5 or not...

You probably did - I just didn't minus the x term when implicitly differentiating so my dy/dx was (x+1)/4(y-3) or whatever instead of -(x+1)/4(y-3)...

BTW, did anyone find Q6 really weird??  The "sin(e) - sin(1)" one... I was sure I'd done something wrong because the x-values didn't give a nice answer...

[kenny_]

I think q5 was where you had to find dy/dx when (1,root3-3)

Since it didn't ask for a rationalised form even -1/(2root3) is fine right? That is what I got.

i think i got that too, pretty sure you don't need to rationalise

[b^3]

b^3, first question (1+x)/(9-x^2)

Yeh I've just had a look and somehow I've used some partial fractions and cancel something out. Dam probably gonna to get 0 for that now. Thats 4 marks gone (with 1 lost in q4) and the A+ is gone. Dam 36/40.

[BoredSatan]

yeah i seperated at the start but got a different answer to itute..

maybe i stuffed up my partial fraction.. i got A=B=1/6?

[footy]

what was question 10?