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1. I cant quite get how to prove

|x| - |z| (less than or equal to) |x-z|

where x and z are complex numbers

any help?
2. Are you familiar with the Argand diagram? If so, draw the question and it should be obvious.
3. (Original post by ponpon14)
I cant quite get how to prove

|x| - |z| (less than or equal to) |x-z|

where x and z are complex numbers

any help?
If you're aware of the triangle inequality, this is pretty much just the same thing but expressed using complex numbers. As ian.slater mentions above, an Argand diagram can be used to visualise this.
4. Ditto what illusionary said, but I really like the fact the thread title is an oxymoron.

Thanks for the help. I havent done the triangle inequalities yet, but il do it using an argand diagram. Thanks a lot!

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