Pure Maths 31

[surinr]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s10_qp_31.pdf
need help with Q9

 

[TaffsAsLevel]

I think it is mixed of vdu/dx-udv/dx / v^2 and implicit after that by substituting y with the given equation but then I also got stuck the mark scheme not giving the final form of the expression

 

[TaffsAsLevel]

Oh wait the final expression is given itself in the question, the gradient. I'll check my work

 

[TaffsAsLevel]

Oh yes, I got the answer, first do what I said and then get dy/dx as subject after implicit differentiation, then simplify it, you get to the point where you have to multiply by (1+x)^(1/2) / (1+x)^(1/2) then you will see difference of two squares, there bingo good luck

 

[surinr]

is there anyway you can give me a detail explanation. where did the implicit differentiation come from?

 

[TaffsAsLevel]

https://www.xtremepapers.com/commun...5/?temp_hash=ea89d735c0bac23e38b046d5def91a0b

 

[TaffsAsLevel]

https://www.xtremepapers.com/commun...7/?temp_hash=ea89d735c0bac23e38b046d5def91a0b

 

[TaffsAsLevel]

differentiate both sides, one by quotient and the other half by implicit because it contains y^2

 

[surinr]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w07_qp_3.pdf
Need help with the entire Q 10

 

[Arjun Dhanak]

Hi. I need to know when we use vector cross product and what the reason for using it is. What is the outcome of doing vector product?
Thanks in advance.
-Arjun

 

[surinr]

Hi. I need to know when we use vector cross product and what the reason for using it is. What is the outcome of doing vector product?
Thanks in advance.
-Arjun

im not too strong with the vectors but the cross product gives us a vector which is perpendicular to the plane or several vectors on the plane

 

[surinr]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w07_qp_3.pdf

Please help with entire Q10
thank you

 

[LindaKim123]

http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w04_qp_3.pdf

question 9 ii) please!!

 

[surinr]

No one seem to be discussing pure maths 31 :/

 

[Es Jay]

any idea as to what the GT will be for math p31?

 

[surinr]

any idea as to what the GT will be for math p31?

58?