Question: For all x R, -|x| Prove that if n Z+, n > 2, and x1, x2, . . . , R, then |x1 + x2

For all x ˆˆ R,
For all x ˆˆ R, -|x| < |x| < |x|. Consequently,

-|x| Prove that if n ˆˆ Z+, n > 2, and x1, x2, . . . , ˆˆ R, then
|x1 + x2 + ˆ™ ˆ™ ˆ™ ˆ™ + xn|

-x, if xs0

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