Mathematics: Post your doubts here!

[A star]

i heard back from my friend.... r u okay with the answer ya karoon send?

naa ok with the answer on the thread yeah just couldnt figure out the part of perpendicular :3

 

[daredevil]

naa ok with the answer on the thread yeah just couldnt figure out the part of perpendicular :3

umm ..... wat is there to figure out?? sorry i only skimmed over the question... :|

 

[Namehere]

Sorry...
Just made a tiny mistake...
It is
zz* -2iz* + .....=0

Does the +12 suddenly turn into a -12? Anyways, I know how to do that part, but thanks anyways! ^^ I wanted you to do the Hence show part (the one with the = 4 )

 

[A star]

naa it was nothing we just had to find the shortest distance and i just couldnt figure out that it was the perpendicular distance and the the one with the longest |z| is an issosceles triangle so two sides = same value

 

[mmmmmm]

It is given that 3-i is a root of the quadratic equation z^2-(a+bi)z+4(1+3i)=0, where a and b are real. Find a and b?

 

[panoramafolks]

It is given that 3-i is a root of the quadratic equation z^2-(a+bi)z+4(1+3i)=0, where a and b are real. Find a and b?

plz tell me if my ans. is correct:

 

[Dudu]

Can someone do this question for me please? Its confusing to me
Its 9709_w13_qp_12.pdf Question 2)i)

Answer is 1.2 Pie or 3.77 radians

Link if needed:http://maxpapers.com/wp-content/uploads/2012/11/9709_w13_qp_1.pdf (Page 6)

Thanks in advance.

 

[ZaqZainab]

sorry for being a little messy
Can someone do this question for me please? Its confusing to me
Its 9709_w13_qp_12.pdf Question 2)i)

Answer is 1.2 Pie or 3.77 radians

Link if needed:http://maxpapers.com/wp-content/uploads/2012/11/9709_w13_qp_1.pdf (Page 6)

Thanks in advance.

 

[asd]

Here is Q8(i):

I´ll upload Q8(ii) soon.

This is always so confusing. How do you know what theyre asking for when they say the smallest value for |z|? like where does the shortest distance from arg(z-u) to the origin come from? Also, what if they asked for the largest value for |z|? What is z? where do I plot z on the argand diagram? is it the origin?

 

[periyasamy]

Hei guys.I have some questions man..Thanks guys..
http://maxpapers.com/wp-content/uploads/2012/11/9709_w13_qp_3.pdf
http://maxpapers.com/wp-content/uploads/2012/11/9709_w13_ms_3.pdf

My questions r from paper 31
Question 5 part 2
Question 6 part 1
Question 7 part 2

 

[sumeru]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s12_qp_62.pdf
Q.no.3...(ii)....Any idea anyone?

 

[sumeru]

Hei guys.I have some questions man..Thanks guys..
http://maxpapers.com/wp-content/uploads/2012/11/9709_w13_qp_3.pdf
http://maxpapers.com/wp-content/uploads/2012/11/9709_w13_ms_3.pdf

My questions r from paper 31
Question 5 part 2
Question 6 part 1
Question 7 part 2

 

[sumeru]

 

[periyasamy]

Thanks buddy
.........................................................................

 

[periyasamy]

Hei sumeru .I got it until the part u write down.What should i do next?
I dont know how to continue.Can u help me man.Very sorry.Very blur in maths.Thanks...

 

[Dudu]

Thank you ZaqZainab

Appreciate it. I just suck at visualizing math.

 

[ZaqZainab]

Thank you ZaqZainab

Appreciate it. I just suck at visualizing math.

I know your feel bro

 

[Thought blocker]

I know your feel bro

I too.

 

[Mohammad Farzanullah]

can someone please help me with the hence show part in part (ii)??

 

[daredevil]

Q6 and Q7 from this paper...

it's M/J 2013 p32
A star