Mathematics: Post your doubts here!

[Thought blocker]

i am talking about bio paper...
tomorrow is my biology paper.. yipe.. (wo-hoo)

Done with it ?

 

[♣♠ Magnanimous ♣♠]

Done with it ?

almost bro.. i am gonna rock in that paper...

 

[Thought blocker]

almost bro.. i am gonna rock in that paper...

great

 

[♣♠ Magnanimous ♣♠]

great

thanks.

 

[Faaiz Haque]

I usually carry it with me, either in P1 or M1

I've never used it before though.

 

[Thought blocker]

I've never used it before though.

Neither I had. But its not a big deal to carry a protector with us in math paper, kabhi bhi kaam asakta hai

 

[Mohammad Farzanullah]

What was the position vector of D in the question involving vectors?

(24 hours have passed )

 

[Faaiz Haque]

Neither I had. But its not a big deal to carry a protector with us in math paper, kabhi bhi kaam asakta hai

Like for what? If we have never used it, in school or in an exam why would they ask? I'm just saying cause I don't feel like going to get one, i cant find my old one

 

[Thought blocker]

Lol, then leave it.

Like for what? If we have never used it, in school or in an exam why would they ask? I'm just saying cause I don't feel like going to get one, i cant find my old one

 

[salvatore]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w09_qp_32.pdf
Please help me with question 8(ii). I'm etting the wrong answer despite trying several times.
I'll be grateful for your help

 

[saad saad]

Help with (iii) plz...???

s04qp4q5

 

[itallion stallion]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w09_qp_32.pdf
Please help me with question 8(ii). I'm etting the wrong answer despite trying several times.
I'll be grateful for your help

Here u go!

 

[Thought blocker]

HELP

 

[itallion stallion]

Can someone plz solve this
http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w13_qp_31.pdf q8 part b.thanks!

 

[A star]

Can someone plz solve this
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w13_qp_31.pdf q8 part b.thanks!

i cannot do it tag me when you get the solution

 

[itallion stallion]

i cannot do it tag me when you get the solution

Okay!many people have said me to tag them I don'tknow whose gonna solve it!
I am getting 1.23 see my method is it correct?
Thanks!

 

[A star]

Okay!many people have said me to tag them I don'tknow whose gonna solve it!
I am getting 1.23 see my method is it correct?
Thanks!

explain pls :3

 

[usama321]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w13_qp_41.pdf
Can someone help me with the last question last part. After getting the value of constant c for the equation of velocity by integerating the acceleration equation, why do we once again find the value of c when we once again integrate velocity to get displacement? Don't we usually just ignore the constant when taking limits? Is it because there were two different equations, and had there been only one, we would not have needed to find out the constant for the displacement. Kindly someone help me. Thanks

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w13_ms_41.pdf

 

[itallion stallion]

explain pls :3

My answer is wrong what's the point of explaining

 

[Saad Mughal]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w13_qp_41.pdf
Can someone help me with the last question last part. After getting the value of constant c for the equation of velocity by integerating the acceleration equation, why do we once again find the value of c when we once again integrate velocity to get displacement? Don't we usually just ignore the constant when taking limits? Is it because there were two different equations, and had there been only one, we would not have needed to find out the constant for the displacement. Kindly someone help me. Thanks

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w13_ms_41.pdf

We ignore the constant c when taking limits, here you are integrating to form an equation for displacement from P to A.
At P, the time t was 10 and displacement s was 100, hence the constant c could not be 0.
When you integrate the equation again to get a formula for s, you are using the time you calculated using the formula you got for velocity.
Basically, since there was displacement and time taken at the start of P (equation for which you are using), the constant c cannot be 0.
You can't integrate with limits because there are two different equations, one from O to P and one from P to A (as you said), whenever there is one equation, you can integrate with limits.