Mathematics: Post your doubts here!

[CЯeScɘnt]

part (ii)

im sorry A*(a*) actually i was having internet problem frm ystrday
i have sketched the diagram,try to understand it,itallion stallion

 

[Wolfgangs]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s13_qp_12.pdf

Is there a particular concept for the point of reflection? Q7.

 

[itallion stallion]

im sorry A*(a*) actually i was having internet problem frm ystrday
i have sketched the diagram,try to understand it,itallion stallion

Thanks a lot!
Just clear my confusions we have a point u= 2+3i,it is given that|z-u|=2 we draw a circle with centre (-2,-3) and radius 2.but if are given arg(z-u)=any angle where will we plot the point u at 2,3 or at -2,-3.i hope u understand what I am trying to ask!

 

[CЯeScɘnt]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s13_qp_12.pdf
Q9 part two
How do we know function is increasing ,decreasing or neither

dy/dx will always be positive for f is an increasing function.

 

[CЯeScɘnt]

Thanks a lot!
Just clear my confusions we have a point u= 2+3i,it is given that|z-u|=2 we draw a circle with centre (-2,-3) and radius 2.but if are given arg(z-u)=any angle where will we plot the point u at 2,3 or at -2,-3.i hope u understand what I am trying to ask!

what is u?

 

[CЯeScɘnt]

Thanks a lot!
Just clear my confusions we have a point u= 2+3i,it is given that|z-u|=2 we draw a circle with centre (-2,-3) and radius 2.but if are given arg(z-u)=any angle where will we plot the point u at 2,3 or at -2,-3.i hope u understand what I am trying to ask!

oops sorry i didn't read the qestion fully

 

[omaaaar]

dy/dx will always be positive for f is an increasing function.

How will we show that f is an increasing function

 

[CЯeScɘnt]

Thanks a lot!
Just clear my confusions we have a point u= 2+3i,it is given that|z-u|=2 we draw a circle with centre (-2,-3) and radius 2.but if are given arg(z-u)=any angle where will we plot the point u at 2,3 or at -2,-3.i hope u understand what I am trying to ask!

nop! if we wre to sktch |z-u|=2 center will be (2,3) n the same if arg(z-u) this is to be sketched got it?

 

[CЯeScɘnt]

How will we show that f is an increasing function

for example in the question which u posted, f'(x) in a whole square which will never be negative....understand?

 

[syed1995]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s13_qp_12.pdf

Is there a particular concept for the point of reflection? Q7.

Not really, Just Draw a diagram. The point will be equidistant from the line.

A= Initial Point
B = Reflected Point

AX = BX

http://puu.sh/8Csz8.png

AB equation will be perpendicular to the line. So Use the gradient of line and -1/m to get the gradient of AB. then solve eqn of line and eqn of AB simultaneously. to get co-ordinates of X.
X is the Midpoint of Points A and B.
Use midpoint formula to get point B.

 

[omaaaar]

for example in the question which u posted, f'(x) in a whole square which will never be negative....understand?

Understood

 

[itallion stallion]

nop! if we wre to sktch |z-u|=2 center will be (2,3) n the same if arg(z-u) this is to be sketched got it?

Okay thanks!

 

[CЯeScɘnt]

Okay thanks!

np

 

[omaaaar]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s13_qp_12.pdf
In Q11 part one how to find the y co ordinate of B

 

[CЯeScɘnt]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s13_qp_12.pdf
In Q11 part one how to find the y co ordinate of B

put x =0

 

[Thought blocker]

I am very weak in Mechanics 1, can someone help me what to do ?

 

[Rutzaba]

Acha bhai no paper discussion... just tell how was the paper?

 

[ZaqZainab]

Acha bhai no paper discussion... just tell how was the paper?

did you give it?

 

[Rutzaba]

did you give it?

nopes lol ... concerned abt the kids around me

 

[Rutzaba]

did you give it?

i told u last tym too tat im in uni now