Suggested Solutions Here [Exam 2]

[danieltennis]

huh?
im confused...
did normal methods (non-CAS) have different questions?
cause for the analysis prob one i got 0.8000

Same.
I got 80% for the percentage one.

[Nelle91]

Should curve CD have a domain of [1,2)

[Collin Li]

huh?
im confused...
did normal methods (non-CAS) have different questions?
cause for the analysis prob one i got 0.8000

Yeah, CAS and non-CAS have slightly different questions.

[pfftlah]

yeh im confused too!
are these answers to the cas exam? the other thread isn't cas exam answers is it?
*lost*

[Collin Li]

yeh im confused too!
are these answers to the cas exam? the other thread isn't cas exam answers is it?
*lost*

I don't think anyone's put up CAS solutions...

[zzdfa]

Should curve CD have a domain of [1,2)

fuckfuckfuck i hope not. i remember reading that question in reading time and telling myself to remember to put a domain on it. but the question asked for an 'equation' not 'function', Can/do equations have domains?

[Nelle91]

did anyone get the same for 2ci coz i think i had the same except +6

[jajab]

can someone please explain the gradient in 2(a)?
i know its a simple calculation but im not getting '7/a'

[Synesthetic]

These are NOT for the CAS exam

And, I'm not sure about the domain for curve CD...I didn't write one.

[orsel]

3)a) 191 minutes; t~3.19 hours = 191.67 days = 192 minutes after rounding, BUT at 192 minutes he is DEAD, therefore 191 minutes is correct

It specifically asks you to round to the nearest minute, therefore even if it was 191.5001 you'd round to 192, not 191.

It's like if they had asked you to round to the nearest integer of, say, rabbits, when you find there are 1.6 rabbits. Even though, normally, you'd round down, here you must round to 2.

[Synesthetic]

3)a) 191 minutes; t~3.19 hours = 191.67 days = 192 minutes after rounding, BUT at 192 minutes he is DEAD, therefore 191 minutes is correct

It specifically asks you to round to the nearest minute, therefore even if it was 191.5001 you'd round to 192, not 191.

It's like if they had asked you to round to the nearest integer of, say, rabbits, when you find there are 1.6 rabbits. Even though, normally, you'd round down, here you must round to 2.

The question asks for the "time...[he] has to find an antidote"

If you state 192 minutes, he doesn't HAVE that amount of time, he'll be dead by then.

Thus you round down to 191 minutes.

[Collin Li]

can someone please explain the gradient in 2(a)?
i know its a simple calculation but im not getting '7/a'

(Since )





Divide by , since :

[Nelle91]

do you get follow through marks in methods? because in 2ci i had did 7-1 instead of 7-7, so i had the same as synesthetic except plus,  but my answer in 2cii was still right if i had +6?

[Collin Li]

do you get follow through marks in methods? because in 2ci i had did 7-1 instead of 7-7, so i had the same as synesthetic except plus,  but my answer in 2cii was still right if i had +6?

You will get 'method marks', but you will lose the 'answer marks' they give, for any incorrect answers, I believe.

[jajab]

aarrrgh i hate conseqential marks! i screwed up that gradient (by not simplifying it properly) and i consequently lost about 10 marks!