News Flash Problem!
Hello, who feels if you try to solve this little problem, which should not be too difficult: Both
P (z) a complex polynomial with all roots of absolute value less than or equal to 1 . Prove that for every root z 0 there is a point z which cancels the derivative P '(z) such that share with everyone: '( (sorry if I umberto drastically lowered the level of culture after your last post)
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