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Mathematics: Post your doubts here!

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https://skydrive.live.com/redir?resid=8E431BE676F5BD8!1202&authkey=!AH77uTDQqhkEH5E&v=3

Just donno where to shade.. |z| < 2 shows to shade whole circle.. But then i am confused with the other inequality..
Sorry.
 
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https://skydrive.live.com/redir?resid=8E431BE676F5BD8!1202&authkey=!AH77uTDQqhkEH5E&v=3

Just donno where to shade.. |z| < 2 shows to shade whole circle.. But then i am confused with the other inequality..
Sorry.
that is correct, except you use dotted lines for both the circle and the y=2-x line because its < not smaller or equal to.
You shade the bottom part of the circle, that is the quarter circle occupied in 2, 3 and 4 quadrant and shade the area below the y=2-x line (the triangle) in the first quadrant.
 
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Just put in the value of a point to check which side of the line gives smaller value of |z| than |z-2-2i| eg.z=i.

Thanks bud :D

that is correct, except you use dotted lines for both the circle and the y=2-x line because its < not smaller or equal to.
You shade the bottom part of the circle, that is the quarter circle occupied in 2, 3 and 4 quadrant and shade the area below the y=2-x line (the triangle) in the first quadrant.

it is smaller dude.. :/
Thanks..
 
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Thanks bud :D



it is smaller dude.. :/
Thanks..
it's the big one, substitute any point eg. -1-i
|z| < |z − 2 − 2i|
|-1-i| < |-1-i -2-2i|
|-1-i|< |-3-3i|
square root 2 < 3 square root 2
and -1-i is below the bisector, so you shade the big one.

unless I'm doing something really wrong
 
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it's the big one, substitute any point eg. -1-i
|z| < |z − 2 − 2i|
|-1-i| < |-1-i -2-2i|
|-1-i|< |-3-3i|
square root 2 < 3 square root 2
and -1-i is below the bisector, so you shade the big one.

unless I'm doing something really wrong

nah, you are right brah.. Thanks bud ;)
 
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9709/31/M/J/10 Questin no. 7 iii How to find the least arg Z and its corresponding mag z. Kindly help.
 

auk

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I have a question please.
A geometric series has first term a and common ratio r,where absolute value of r<1.Sum of infinity of this series is 8.The sum of infinity of this series obtained by adding all the odd-numbered terms(i.e. 1st term+3rd term+5th term+....) is 6.Find the value of r
 
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im facing problems in 9709/06/M/J/04 question no: 3......sorry cant paste the link cause the site is down!!! please do help
 
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solve these questions
inequality (x+1)/(x-1) <4
find stationary point y=2x^2 + e^-x^4 .....y=x^n-lnx^n for n>= 1
solve the integration of 1/2x dx
plz explain
 
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