Mathematics: Post your doubts here!

[panoramafolks]

Could somebody pls pls pls prove this for me?
cosx/ 1-sinx = tan (pi/4 + x/2)

the question aint clear , plz write it down and take a pic or so and post it here.

 

[Mustafa Malik]

i think u can... i mean if u only lose 7 in P1 then u can easily get an A.... or even if u lose like around 10 i think... it depends on the gt
and A in p1 and a B/even a bordeline C in M1 can prob score a borderline A... *optimism* ^__^ Good Luck... and pray for us all

thank you, I think gt for mechanics will be fairly low due time so fingers crossed.

 

[immie.rose]

the question aint clear , plz write it down and take a pic or so and post it here.

 

[immie.rose]

Pls help!

 

[Shehroze Faisal]

may june 2013 paper 33 Question 2 pls tuesday paper help

 

[daredevil]

I did this much ^

tan(pie)/4 = 1
and tan(x/2) = [Sin(x/2)]/[Cos(x/2)]

i think we have to use one of the Cos2x formulae maybe further but i don't get which formulae to use...
tag me wen u get an answer to this question plz?

 

[daredevil]

may june 2013 paper 33 Question 2 pls tuesday paper help

link?

 

[Shehroze Faisal]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s13_qp_33.pdf

 

[Shehroze Faisal]

link?

I got a different anwer ,1 +lnx^3 how to get ex^3 after multiplying with exponential

 

[daredevil]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s13_qp_33.pdf

 

[Shehroze Faisal]

thanks

View attachment 42799

boss

 

[daredevil]

okay anyone who can work out both these questions with the working and all??
plzz do it....

the address to the paper is seen in the address bar in the picture.... thankss

 

[immie.rose]

okay anyone who can work out both these questions with the working and all??
plzz do it....

the address to the paper is seen in the address bar in the picture.... thankss

 

[A star]

View attachment 42797

I did this much ^

tan(pie)/4 = 1
and tan(x/2) = [Sin(x/2)]/[Cos(x/2)]

i think we have to use one of the Cos2x formulae maybe further but i don't get which formulae to use...
tag me wen u get an answer to this question plz?

rationalise the denominator

 

[A star]

okay anyone who can work out both these questions with the working and all??
plzz do it....

the address to the paper is seen in the address bar in the picture.... thankss

i did them yesterday. let me consult my working then il post the answers
first one starts with the replacement of x in the solution

 

[daredevil]

rationalise the denominator

but its not a complex number


okaayy welll i'll try that out... in a while... right now physics is wringing my neck -.-

 

[A star]

but its not a complex number


okaayy welll i'll try that out... in a while... right now physics is wringing my neck -.-

jahan jahan denominator ajeeb ho aur us ki waja sae answer nahi araha ho just rationalise it madam :3
yeah same here . telecommunication :/

 

[daredevil]

jahan jahan denominator ajeeb ho aur us ki waja sae answer nahi araha ho just rationalise it madam :3
yeah same here . telecommunication :/

oohh achhaa.. thanku good sir

 

[wohooo]

If the question ask state what happens to x if t becomes large? How do we want to answer this question

Anyone can help me?

 

[Rutzaba]

Rutzaba View attachment 42757

thats nopt the answer