Mathematics: Post your doubts here!

[Kirabo Takirambudde]

Can anyone help me in this paper:
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s09_qp_1.pdf
Q10 ii)

paper 1 already passed, lol..????

 

[Kirabo Takirambudde]

Plzz help me with this....Q no 4
http://www.xtremepapers.com/papers/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_32.pdf
I still get confuse with these numbers......
Explain me how to get the sketch....a drawing will be much apreciated...
Thanks...!!

Dont worry too much about how the graphs will look like outside the range, just get the general shape of both graphs and you'll be fine

 

[leadingguy]

Thank you very much. On the contrary can u also clear another o my small doubt????

when we are to find the acute angle between planes or between lines. we just subtract the ans (theta ) sometyms by 180, sumtyms by 90.
I cannot understand this????? how shud we know that whether to subtract from 180 or 90 ???? can u help here ??/

he canany one ans this please????

 

[Vinita Manek]

hw ws math 32???

 

[Kirabo Takirambudde]

lets just say i think the grading curve is gonna drop by like 15 marks

 

[TeKnOzOr]

Dont worry too much about how the graphs will look like outside the range, just get the general shape of both graphs and you'll be fine

thnxx buddy for your effort...but the paper is finished now...and didnt get any graph...!so...
Thanks again dude

 

[TeKnOzOr]

agrrrrrrrrrrrrrrrr...........I just hAted the pAper today....wass quite tough and tricky...!! :/
The dream of getting an A is fading day by day.... :'( myyyy gOd....Im in a state of DISRUPT....!!
im totally lost....!! lets just hope that the S1 paper will be ok....!!
bAd dAy---->>><<

 

[xyz!]

agrrrrrrrrrrrrrrrr...........I just hAted the pAper today....wass quite tough and tricky...!! :/
The dream of getting an A is fading day by day.... :'( myyyy gOd....Im in a state of DISRUPT....!!
im totally lost....!! lets just hope that the S1 paper will be ok....!!
bAd dAy---->>><<

32???

 

[sarah.zarrar]

am i the only one who found 32 very difficult and left almost 30 marks? :'(

 

[john10]

what was the perpendicular height??

 

[Kirabo Takirambudde]

am i the only one who found 32 very difficult and left almost 30 marks? :'(

lol, ur not, u saw hw many questions i wus busy answereing on this forum, and I think i left out just as many as u.. bt remember that method marks count for everything and the final answer only usually counts for 1 mark

 

[snowbrood]

can anyone help me on this

 

[Anonymous']

Did anyone sit for Maths P33?

 

[Vinita Manek]

yup...i did....n it wsnt good...wbu???

 

[Anonymous']

yup...i did....n it wsnt good...wbu???

hmm.. it was good.. I didn't have enough time to finish qn 7.(ii), and for qn 7.(i), I just realized the method and the working at the very last minute, so, I had to rush until the invigilator took my paper.. :/

 

[Vinita Manek]

can anyone help me with qt 2 from 9709/07/o/n/07

 

[xyz!]

what was the perpendicular height??

i got 6.33 ....did u get dat?

 

[shanky631]

i got 6.33 ....did u get dat?

ya.. something like that

 

[kevin94]

3 A sample of 36 data values, x, gave Σ(x − 45) = −148 and Σ(x − 45)2 = 3089.
(i) Find the mean and standard deviation of the 36 values. [3]
(ii) One extra data value of 29 was added to the sample. Find the standard deviation of all 37 values.

how to do the second part?

 

[TeKnOzOr]

32???

yAa variant 32 man...and you?!?