Asked by ollie
                Prove that |x+y+z| is less than or equal to |x|+|y|+|z|.
Please try to show working and explain
            
        Please try to show working and explain
Answers
                    Answered by
            Steve
            
    google is your friend. Lots of help with the triangle inequality.
Once you have convinced yourself that
|x+y| <= |x| + |y|
then it is a simple extension to get to your problem.
    
Once you have convinced yourself that
|x+y| <= |x| + |y|
then it is a simple extension to get to your problem.
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