SOLUTION: |z1+z2|<=|z1|+|z2| i need the proofing

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Question 1150291: |z1+z2|<=|z1|+|z2| i need the proofing
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!

For a good step-by-step proof, see:

https://math.stackexchange.com/questions/582433/prove-the-triangle-inequality-involving-complex-numbers