CSSA Trial (1 Viewer)

[sneaky pete]

I'm pretty sure everyone that is taking it, should have taken the CSSA trial by now?

Originally posted by Huy
Q9:
Gardening/maxima minima problem involving arc lengths etc.
Tank/water flowing rates.
Train question.

Q10:
_something_
stationary points, nature, graphing of e^-x.cosx

Are you sure the tank/water flow was in Q9?
If I recall correctly it was *something like*..
-Rate of water leaving a container proportional to amount of water remaining.
-Container contains 1000L of water
-After 45 minutes, it contains 800L of water

(i) How many Litres of water remain after 1 hour?
(ii) After how long will there be 1L of water remaining?

 

[Dash]

Originally posted by howareya
the train

the end two areas have to be equal...because the end on the same point.

therefroe 0.5bh = 0.5bh

sub in the values (remeber to convert to hours)

0.5 x (0.3-t) x 80 = 0.5 x (0.3-t) x 100

rerrange for t and you get 1/3 or 20 mins

add then up total of 40 mins

diatacne is area under graph

And...

I get the idea, but I can't follow ur calculations...

 

[tempco]

hmm.. got exams back.. i got 111/120, which is 92.5% (teacher said he might round it up to the nearest whole percentage )

i was extremely happy with my last question.. i got 12/12! i thought i totally bombed out on the graph (drew at least 5 different graphs)

i got 1/5 for the train question.. man that sucked.. T_T i just got the graph right.. all the rest i did was crap.. oh well.. better luck next time i guess

 

[iambored]

Originally posted by NekkidSerpent
hmm.. got exams back.. i got 111/120, which is 92.5% (teacher said he might round it up to the nearest whole percentage )

i was extremely happy with my last question.. i got 12/12! i thought i totally bombed out on the graph (drew at least 5 different graphs)

i got 1/5 for the train question.. man that sucked.. T_T i just got the graph right.. all the rest i did was crap.. oh well.. better luck next time i guess

that last q was hard 2!

 

[crazylilmonkee]

omg.. 111/120? good work! i got 100/120 and a 9/12 for q9.. what was the train one out of? 5? yay I must've done something right!

 

[SoCal]

Far out, I only got 56.5/120 (48%) and I do extension 1 mathematics. I have got to stop wasting my time and study.