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**(Complex number) I have no idea on this :(**

## Homework Statement

If z lies on circle |z|=2, then show that

[tex]\left\lvert \frac{1}{z^4-4z^2+3} \right\rvert ≤ \frac{1}{3}[/tex]

## Homework Equations

## The Attempt at a Solution

Please somebody give me an idea. [URL]http://209.85.48.12/11451/115/emo/dizz.gif[/URL]

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