SPECIALIST MATHEMATIC 2009 EXAM ONE

[patrickthai]

yeah my domain was [-4.0] too

and im pretty worried abou the dy/dx question

shit i interpreted the question as

'hence, evaluate' so i thought u gotta use the result u go from above, and just sub in (1,1)

shoot me please.

[Xepht]

my domain = [-4, 0]

yeh same

[ayu]

i got [0,4] for domain, [-3,1] for range. but im not sure whether theyre right at all :s
ive made so many errors across the paper..totally stuffed the first question and now kicking myself realising how easy it was.
did anyone get 2 units^2 for the graph between x=-1, x=1 one? i think it was question 8?

i got a loge ans

same

[dino]

my domain [-4,0]
i ended up getting cos(sin-1(srt(2)) + sqrt(2)i for the cos2θ question, couldnt get what cos of sin-1 was though =[
i cant believe the vector question was asking for resolutes. took that totally wrong. =[
oh andi didnt solve for k, though i did toy with the idea.
and i left it as v^2. grrr.

it was 2 to 4pm and i had three questions to go and i was shitting myself... then i realised that we were going till 4:15.

[littlecherry25]

for the cis (theta) question

I got

- square rt (7/8) + square rt(1/8) i

[YT_17]

i cannot believe how many silly mistakes i hv done...........

[YT_17]

Can i ask if you actually use the right formula but did silly mistakes and got the wrong answer.......u will lose the whole mark or not?

[ayu]

Can i ask if you actually use the right formula but did silly mistakes and got the wrong answer.......u will lose the whole mark or not?

i don't think u lose the complete mark. perhaps only 1 mark.
other marks for the working out and formulas used. for MAV, insight, etc, one mark is usually allocated for the final answer. Even tho this is vcaa, still, they may be marked similar.

[kurrymuncher]

I have no idea why they left out mechanics, besides that elevator question.

[YT_17]

oh ok thank you......that makes me feel better...........lol..........anyway.......can i ask if you accelarates downward..........is it a or -a

Can i ask if you actually use the right formula but did silly mistakes and got the wrong answer.......u will lose the whole mark or not?

i don't think u lose the complete mark. perhaps only 1 mark.
other marks for the working out and formulas used. for MAV, insight, etc, one mark is usually allocated for the final answer. Even tho this is vcaa, still, they may be marked similar.

[dino]

I have no idea why they left out mechanics, besides that elevator question.

maybe for monday? big mechanics question.

oh ok thank you......that makes me feel better...........lol..........anyway.......can i ask if you accelarates downward..........is it a or -a

Can i ask if you actually use the right formula but did silly mistakes and got the wrong answer.......u will lose the whole mark or not?

i don't think u lose the complete mark. perhaps only 1 mark.
other marks for the working out and formulas used. for MAV, insight, etc, one mark is usually allocated for the final answer. Even tho this is vcaa, still, they may be marked similar.

i did a.

50(g-2)
and
50(g+2)

[kurrymuncher]

I have no idea why they left out mechanics, besides that elevator question.

maybe for monday? big mechanics question.

oh ok thank you......that makes me feel better...........lol..........anyway.......can i ask if you accelarates downward..........is it a or -a

Can i ask if you actually use the right formula but did silly mistakes and got the wrong answer.......u will lose the whole mark or not?

i don't think u lose the complete mark. perhaps only 1 mark.
other marks for the working out and formulas used. for MAV, insight, etc, one mark is usually allocated for the final answer. Even tho this is vcaa, still, they may be marked similar.

i did a.

50(g-2)
and
50(g+2)

It asked to calculate to the nearest Newtons, so that would be incorrect.

[ayu]

I have no idea why they left out mechanics, besides that elevator question.

maybe for monday? big mechanics question.

oh ok thank you......that makes me feel better...........lol..........anyway.......can i ask if you accelarates downward..........is it a or -a

Can i ask if you actually use the right formula but did silly mistakes and got the wrong answer.......u will lose the whole mark or not?

i don't think u lose the complete mark. perhaps only 1 mark.
other marks for the working out and formulas used. for MAV, insight, etc, one mark is usually allocated for the final answer. Even tho this is vcaa, still, they may be marked similar.

i did a.

50(g-2)
and
50(g+2)

It asked to calculate to the nearest Newtons, so that would be incorrect.

damn! i considered multiplying out..but left it factorised in the end!!...

[TrueTears]

oh ok thank you......that makes me feel better...........lol..........anyway.......can i ask if you accelarates downward..........is it a or -a

Depends if you set up as positive then it would be -a.

If up is negative then it'd be +a.

[brenny]

so what what the correct answer for the question involving k where it asked to find the gradient at (1,1) was it -6? and k= -1 ??