Mathematics: Post your doubts here!

[jason234]

Q9 (ii) p1 o/n 2006

 

[saimaiftikhar92]

IN VECTOR QUESTION, WHY HAVE YOU TAKEN Y AS 3???

 

[talhajohar]

p1 o/n 2006 Q8 (ii) and (iii)

 

[talhajohar]

you can take any value for y. i took 3 so that z becomes 0. but it is upto you.

 

[saimaiftikhar92]

so we have to make z=0??

 

[abcde]

http://www.xtremepapers.com/CIE/index.php?dir=International%20A%20And%20AS%20Level/9709%20-%20Mathematics/&file=9709_s11_qp_32.pdf

IN IT QUESTION 2 , 5 AND 9

^Didn't see your solution before. I'm going to post mine anyway. Hope it is not wasted.

 

[saimaiftikhar92]

i need help in these
http://www.xtremepapers.com/CIE/index.p ... _qp_31.pdf


in it question 2, 4 , 5 and 6

 

[talhajohar]

Q9 (ii) p1 o/n 2006

 

[talhajohar]

its not necessary to make z = 0. It is just to avoid getting a fractional value of z.

so we have to make z=0??

 

[saimaiftikhar92]

yes!!!, (abcde) it was helpful

 

[saimaiftikhar92]

http://www.xtremepapers.com/CIE/index.p ... _qp_31.pdf


i need help in question 2 , 4 , 5 and 6

 

[talhajohar]

q 2 and q 4

 

[saimaiftikhar92]

i did not get that part in which you stated different values of x like -2 then 2/3.......

 

[talhajohar]

i did not get that part in which you stated different values of x like -2 then 2/3.......

this was the solution of f(x) from the part above. if we replace x by 3^y then it would become the equation in part 1 which we have already factorized.

 

[saimaiftikhar92]

I NEED HELP IN THIS ONE:

SHOW THAT tan(60 degrees + thita) + tan(60 degrees - thita) =k can be written in the form as (2 root 3)(1 + tan ^2 thita)= k(1- 3tan^2 thita)

hence solve the equation :

tan(60 + thita) + tan(60 -thita)=3 root 3 giving all solutions in the interval ((0 is less than equal to thita is less than equal to 180))

 

[Nibz]

Try some questions yourself, too. We are not here to spoon-feed you.
Or better solve it, we can correct your mistakes.

 

[saimaiftikhar92]

I HAVE ALREADY SOLVED,,, and i am posting those questions which i am facing problem in.

 

[Nibz]

All right. Sorry then

 

[talhajohar]

q5 and q6

 

[saimaiftikhar92]

FOR THE SECOND QUESTION I AM UNABLE TO SEE THE WHOLE SIDE OF THE PAGE