Mathematics 9709 paper 12 how was it with you?

[arlery]

For f(x) inverse I got x-3/1+2x

 

[aaakhtar19]

yah if u used ur c cordinates
and A (2,9)
then u'll get ECF

 

[aaakhtar19]

hey for coordinate of C i got 6,3 and im prety sure about it cann some1 gibve me coordinates of A and B

i got C(6,3) too but i don't remember the co-ordinates for A and B. and i think (6,3) is the right answer... not (3.6,1)... i didn't get stuck in that question. it was easy. i'm pretty sure it's (6,3).

no C is not (6,3)

coz A was (2,5)
and b(10,9)

now solve the ans will surely be (18/5,9/5)

 

[aaakhtar19]

For f(x) inverse I got x-3/1+2x

no it was same as f(x)
(x+3)/(1+2x)

 

[Talha]

i wrote da volume in last ques as 136 8/15 pi... vil dis be correct? .... and i wrote da range of cos^2x as > -1 and < 3 and not as -1 < f(x) < 3.. so vil this be correct? Plz ans any1.. tensed..

 

[aaakhtar19]

hey everyone these r my
answers wt abt urs hv i got
anyone rong plz discuss

I got the same answers but I think my range answer was wrong. Do you guys think the Mechanics paper will be easy if P1 was hard?

my range was -1 ≤ x ≤ 7. i think this makes more sense than -1 ≤ x ≤ 3. the amplitude is 4 and it's axis is at y=3... so 3 + 4 = 7.

it wud hv made a definite sense if the graph wud hv been of 3-4cos (x)
bt it was for 3-4cos^2(x)
its range is -1 to 3

 

[aaakhtar19]

i wrote da volume in last ques as 136 8/15 pi... vil dis be correct? .... and i wrote da range of cos^2x as > -1 and < 3 and not as -1 < f(x) < 3.. so vil this be correct? Plz ans any1.. tensed..

ya the volume is rite
and range will also b credited full
at least it shud be.. :good: :good:

 

[Talha]

hey for coordinate of C i got 6,3 and im prety sure about it cann some1 gibve me coordinates of A and B

i got C(6,3) too but i don't remember the co-ordinates for A and B. and i think (6,3) is the right answer... not (3.6,1)... i didn't get stuck in that question. it was easy. i'm pretty sure it's (6,3).

no C is not (6,3)

coz A was (2,5)
and b(10,9)

now solve the ans will surely be (18/5,9/5)

aakhtar's rite i also got (18/5, 9/5 )!!!!

 

[arlery]

YAYYYY !! So that means I only messed up the range part [inshAllah] I'll get 70+ :Yahoo!:

 

[beststriker]

In the question, when they said to draw the graph of cosx...the range was till pie....i constructed it till 2pie....so it would be accepted or considered to be wrong...???

 

[Amna]

urgh yeah now that i solve it... WHAT was i thinking during the paperrr??? kill me. that was so easy!
same for the range. aarrghhh and i thought the paper went good!!
well, atleast now i'm expecting less than an a. otherwise i'd have been disappointed at the time of the result :/

 

[Saturation]

Ahk! I couldnt get how to solve the quadratic qs at all during the exam! It turns out to be a really simple qs! Messed up on the angle with the x-axis question as well, and the f^-1, postion vector of OD... And I gave only 1 solution for the cos^2 question! Gonna loose like 15 marks! Ouch! :/

 

[sasukeuchiha]

The paper was good! I gave only the positive solution of cos^-1. This and my graph with black pen was slightly shaky.
Expecting an even better Mechanics paper!

 

[ahmed t]

i hope mechanics and statistics go well cause im aiming for an A*
i made only 2 silly mistakes in this exam one in simeltaneous and another in last question and im really pissed cause i had the time to revise but i didnt bother

 

[BILALrox01]

hey everyone these r my
answers wt abt urs hv i got
anyone rong plz discuss

Hey.. all of my answers tally with ur.. just the vector mai mjhai lag ra hai koi -ive b likh aya hun.. but... F inverse ka mera x-3/2x-1 aya tha y use kar k.. nd if u put any value in this equation to domain and range inverse and function ki match karti hai so i'm sure k mine is write.. IDK k shayad tumhara b theek ho.. as he said using the answer to part 1.. acha wo r = 16 kya hai.. mjhai part nai yaad a ra.. plz tell me.. tension ho rai hai k kuch chor to nai aya

 

[mrpaudel]

vector angle is 112 .....and distance is 3.58...

 

[sweetyrox]

For dat parallelogram ques...to find da vector OD...cann AB=CD be used??

 

[ahmed t]

i got the angle 101?????????????

 

[Adham-amr]

The angle is 71.5 or 108.5 ! it didn't say acute or obtuse..so both are correcy

 

[sibtain1227]

it was gud apart from some silly mistakes....which i regret now but overall its was guddie gud :crazy: