- #1
diracy
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Homework Statement
[itex]\sqrt{\sum}x^{2}_{i}[/itex][itex]\leq[/itex][itex]\sum[/itex]|x[itex]_{i}[/itex]|[itex]\leq[/itex][itex]\sqrt{n}[/itex][itex]\sqrt{\sum}x^{2}_{i}[/itex]
*The sums are all from i=1 to n.*
Homework Equations
The Attempt at a Solution
I'm very new to proof-based math, and just looking for some help to get started with this one. Thanks in advance.