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Mathematics: Post your doubts here!

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Need help please!
November 2013, Paper 31.
Question 8. (b) Just need help in finding the least value for |z-w|. Also need to know if there's a method to do these questions.

question1.JPG

Also Q4. I have tried doing this on Wolfram Alpha too and that gives a different answer to the marking scheme. Can someone please solve this?

question2.JPG
 
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well it doesnt matter cux students like us score almost hundred percent uin the rest of the paper so 3 4 marks dun make a big difference
I dont like maths :p hope so i need nearly 67 in p3 and 43-45 in p4 to score an A due to S1 -_________-
 
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I dont like maths :p hope so i need nearly 67 in p3 and 43-45 in p4 to score an A due to S1 -_________-
p3 to achi hoti hai yar... bus complex numbers ik karwi goli and ussually summers k paper comparatively easy hote hain so chill r gud at studies saub sahi hiojaye ga inshaAllah mai dua karing for tum b apne lie kro :)
 
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