Qualification > Math

URGENT MATHS---EXAM TOMOROW

<< < (2/4) > >>

Deadly_king:

--- Quote from: cashem'up on October 26, 2010, 02:22:42 pm ---Hey guys i really need some help in maths regarding this question A levl exam tmrow w05 qp3 q7 last part regarding argand diagram Thanks

Sketch an Argand diagram showing the point representing the complex number 1 + 2i. Show on
the same diagram the set of points representing the complex numbers  which satisfy
|z| = |z ? 1 ? 2i| .

How do u do this please please help

--- End quote ---

Here's another method :

[ z ] = [ z - 1 - 2i ]
=> [ z - (0 + 0i)] = [ z - (1 + 2i)]

It represents the line which bisects perpendicularly the line joining (0,0) and (1,2).

So you just need to plot the points (0,0i) and (1,2i) on your Argand diagram and the bisect the line joining them.

Hope it's clear enough for you to understand ;)

By the way I have p3 as well tomorrow :D

Try to relax a bit and do not get stressed out especially when the paper comes in front of you ;)

SAKS10111:

--- Quote from: Deadly_king on October 26, 2010, 03:46:45 pm ---Here's another method :

[ z ] = [ z - 1 - 2i ]
=> [ z - (0 + 0i)] = [ z - (1 + 2i)]

It represents the line which bisects perpendicularly the line joining (0,0) and (1,2).

So you just need to plot the points (0,0i) and (1,2i) on your Argand diagram and the bisect the line joining them.

Hope it's clear enough for you to understand ;)

By the way I have p3 as well tomorrow :D

Try to relax a bit and do not get stressed out especially when the paper comes in front of you ;)

--- End quote ---

How did you find the paper? I found it really easy, except for the last part of the vectors question! Hopefully shouldn't be losing more than 4-5 marks overall.

Deadly_king:

--- Quote from: SAKS10111 on October 29, 2010, 04:40:21 pm ---How did you find the paper? I found it really easy, except for the last part of the vectors question! Hopefully shouldn't be losing more than 4-5 marks overall.

--- End quote ---

Same for me.

It was a very easy paper. However I was not able to complete the number for vectors part 3. :(

SAKS10111:

--- Quote from: Deadly_king on October 29, 2010, 04:50:01 pm ---Same for me.

It was a very easy paper. However I was not able to complete the number for vectors part 3. :(

--- End quote ---

Wow, same here lol. Vectors part c was the only question I couldn't finish correctly. Fingers crossed that I got everything else right! Do you remember any of your answers?

Deadly_king:

--- Quote from: SAKS10111 on October 30, 2010, 04:29:36 pm ---Wow, same here lol. Vectors part c was the only question I couldn't finish correctly. Fingers crossed that I got everything else right! Do you remember any of your answers?

--- End quote ---

Hmm.........some of them, yeah!

You wanna compare answers ?

Navigation

[0] Message Index

[#] Next page

[*] Previous page

Go to full version