Methods 2009 Exam 1 Suggested Solutions

[jrdaniell]

TT, in the log equation with x, are you certain that x must be greater than zero, for there is a 2 out the front and the question stated no domain, thus -1 should be a perfectly acceptable answer as well as 3/2.

[TrueTears]

TT, in the log equation with x, are you certain that x must be greater than zero, for there is a 2 out the front and the question stated no domain, thus -1 should be a perfectly acceptable answer as well as 3/2.

Have a read here: http://vcenotes.com/forum/index.php/topic,19334.msg195054.html#msg195054

[dezz]

how many marksyou think ill lose for using .6 instead of .06 on the approximation question?
dont know how i managed that.
argh, my blindness.
but yea paper was pretty easy, finished in 25minutes. argh hope i dont loose to many marks for the approximation.

just raising my unanswered question again
also, would you lose any marks for not putting a modulus for the log antidiff question?
argh stupid mistakes.

Yeah you'd lose 1 mark.

1mark for the .6 thing? or 1 for the log part.?
or both :|
i was expecting to lose 2marks for the .6 one. hopefully only one :|

[nadine]

u know for the log question. i just said the x cant equal 1 therefore it equals 3/2 is that right?

[TrueTears]

how many marksyou think ill lose for using .6 instead of .06 on the approximation question?
dont know how i managed that.
argh, my blindness.
but yea paper was pretty easy, finished in 25minutes. argh hope i dont loose to many marks for the approximation.

just raising my unanswered question again
also, would you lose any marks for not putting a modulus for the log antidiff question?
argh stupid mistakes.

Yeah you'd lose 1 mark.

1mark for the .6 thing? or 1 for the log part.?
or both :|
i was expecting to lose 2marks for the .6 one. hopefully only one :|

1 for log. I'm not too sure myself on the 0.6 one.

[cjays66]

Would you lose a mark for not including the units in the rates of change question.

[dezz]

how many marksyou think ill lose for using .6 instead of .06 on the approximation question?
dont know how i managed that.
argh, my blindness.
but yea paper was pretty easy, finished in 25minutes. argh hope i dont loose to many marks for the approximation.

just raising my unanswered question again
also, would you lose any marks for not putting a modulus for the log antidiff question?
argh stupid mistakes.

Yeah you'd lose 1 mark.

1mark for the .6 thing? or 1 for the log part.?
or both :|
i was expecting to lose 2marks for the .6 one. hopefully only one :|

1 for log. I'm not too sure myself on the 0.6 one.

alright thanks, you would think it would be no more than 2 marks yea?
1mark for answer, and 1 for screwing up a number in the working?
the rest would be fine imo.

[THem]

I think the question said to include the units, so probably?

[TrueTears]

how many marksyou think ill lose for using .6 instead of .06 on the approximation question?
dont know how i managed that.
argh, my blindness.
but yea paper was pretty easy, finished in 25minutes. argh hope i dont loose to many marks for the approximation.

just raising my unanswered question again
also, would you lose any marks for not putting a modulus for the log antidiff question?
argh stupid mistakes.

Yeah you'd lose 1 mark.

1mark for the .6 thing? or 1 for the log part.?
or both :|
i was expecting to lose 2marks for the .6 one. hopefully only one :|

1 for log. I'm not too sure myself on the 0.6 one.

alright thanks, you would think it would be no more than 2 marks yea?
1mark for answer, and 1 for screwing up a number in the working?
the rest would be fine imo.

Yeah probs 2.

[nadine]

yeh u would because it specifically asks you for the units

[dezz]

im guessing 40 RAW isnt really possible with a mid - low A on exam 1 ?:|
so many stupid little mistakes...
using .6 instead of .06
not including domain in inverse function question
not including modulus in log question.
dont think my answer for the very last question was enough..
and also just realised i didnt simply 6/9 to 2/3 in the probabilty question
wtf was i doing... :|
ARGH

roughly how many marks can i afford to lose in exam 2 for a RAW 40?
thanks.

[matthew_potato]

for the last question i said that the approx formula was an existing val (2) + the area (rectangle) under the differential curve that is (f'( x h). where h is the width, i then drew a differential graph (no tangents) with the area shown and stated that because the approx area is bigger, the approx value was bigger then original

it's not what the answers say, but do you think i'll get the mark? or is what i wrote even true?

[mystikal]

im guessing 40 RAW isnt really possible with a mid - low A on exam 1 ?:|
so many stupid little mistakes...
using .6 instead of .06
not including domain in inverse function question
not including modulus in log question.
dont think my answer for the very last question was enough..
and also just realised i didnt simply 6/9 to 2/3 in the probabilty question
wtf was i doing... :|
ARGH

roughly how many marks can i afford to lose in exam 2 for a RAW 40?
thanks.

it depends on how hard the exam 2 is and how you went on sac's its still very possible to get 40+ RAW methods with an A on exam 1, if you have like high A's for SAC's and A+ (mid - high (so you can afford to lose like 7-8 marks)) then you can still get 40+ RAW

[cjays66]

and also just realised i didnt simply 6/9 to 2/3 in the probabilty question
wtf was i doing... :|
ARGH

Did that also, i don't think we would lose marks though...

[VeryCrazyEdu.]

will we definately lose a mark for NOT stating domain and range?? for the inverse function

ggaahhh i was going to but decided against it
i lost a mark for question s- forgot the -1/2 out the front
the domain and range for the inverse function
i included -1 in my answer for the log question and there is no way i got a mark for my explanation at the end

heres hoping the a+ cut off is 36/40 haha