Mathematics: Post your doubts here!

[syed1995]

Guys I'm facing a problem with a specific type of question... Like when they say give a set of values for k for which .. etc.
After we solve the eqn. and get a value of k, how do we set the inequality... and know which sign to put.. Like this for example.

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_12.pdf
6) i.

Oi tag me as well .. when you get the answer.. since I don't know that as well..! How to know whether the limit will be lesser or greater?

 

[Rutzaba]

Okay guys heres tha deal.
If you cant prove something move on. Dont waste time correcting it unless you have finished the paper

 

[A star]

https://www.xtremepapers.com/community/attachments/p1-question-png.24987/


please help me on thse

first pm me who are you

 

[syed1995]

Yep we're 12. You guys, I've only done past papers from 2008 to 2012. Is that enough? :/

I have only done 2012 :\

 

[Rutzaba]

Guys I'm facing a problem with a specific type of question... Like when they say give a set of values for k for which .. etc.
After we solve the eqn. and get a value of k, how do we set the inequality... and know which sign to put.. Like this for example.

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_12.pdf
6) i.

IT MEANS no point of intersection ie b^2-4ac <0

 

[Rutzaba]

I have only done 2012 :\

whatttt?

 

[Manobilly]

Pakistan and India both are 12.. I think and I am 12 btw. I am also one of those pakistani who is not a cheetah

Really Pakistan and India are 12? I thought they are 1.Well I am 12 too.

 

[A star]

Guys I'm facing a problem with a specific type of question... Like when they say give a set of values for k for which .. etc.
After we solve the eqn. and get a value of k, how do we set the inequality... and know which sign to put.. Like this for example.

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w10_qp_12.pdf
6) i.

well if tangent then equate the formulae to zero
if two real distinct points then formulae>0
if no real points then formulae <0

 

[Manobilly]

well the Q are also very lengthy n stuff .

Try to give your best ,1st attempt the 1's you can easily solve .U will save time that way. don't panic .

 

[syed1995]

IT MEANS no point of intersection ie b^2-4ac <0

naw .. he means

like with

k^2 – 4k < 0
k(k-4)<0
we get two numbers .. k=4 and k=0 .. how does one know which sign to put.. greater then or less then and with which..

k-4<0 .. k<4 ? and k<0 ?

 

[Rutzaba]

okay one thing we can do to make this thread better is to post questions here only... and not the tension... cux tension is contagious for others... lowers the general level of morale! you ppl gonna ace it YEA?!

 

[haha101]

https://www.xtremepapers.com/community/attachments/p1-question-png.24987/


please help me on thse

common someone

 

[Rutzaba]

naw .. he means

like with

k^2 – 4k < 0
k(k-4)<0
we get two numbers .. k=4 and k=0 .. how does one know which sign to put.. greater then or less then and with which..

k-4<0 .. k<4 ? and k<0 ?

lemme give u an example with graphs? itl take a few mins yeah?

 

[Manobilly]

I have only done 2012 :\

really?????

 

[syed1995]

lemme give u an example with graphs? itl take a few mins yeah?

SURE!

 

[syed1995]

really?????

Yep.. And all the questions which I did while helping members here.

 

[Manobilly]

okay one thing we can do to make this thread better is to post questions here only... and not the tension... cux tension is contagious for others... lowers the general level of morale! you ppl gonna ace it YEA?!

InshAllah

 

[haha101]

Try to give your best ,1st attempt the 1's you can easily solve .U will save time that way. don't panic .

thanks for the advice

 

[Manobilly]

Yep.. And all the questions which I did while helping members here.

Oh well Good Luck

 

[Manobilly]

Question7 O/N12 paper 11 ,part ii