Can anybody tell me why(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\sum_{j=1}^p |x_j-y_j| \leq \left( \sum_{j=1}^p 1\right)^{1/2} \left( \sum_{j=1}^p |x_j-y_j|^2 \right)^{1/2}[/tex]

is true?

Thank you!

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# Simple Inequality

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