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Math 6210 • Real Analysis

2003 • Question 9

Determine how many zeroes, counting multiplicity, the polynomial \[ p(x)=z^5-6z^4+z^3+2z-1 \] has in the unit disc \(U=\{z\in \mathbb C: |z|<1\}\). Prove that your answer is correct.

Raw LaTeX

Determine how many zeroes, counting multiplicity, the polynomial
\[
p(x)=z^5-6z^4+z^3+2z-1
\]
has in the unit disc \(U=\{z\in\mathbb C: |z|<1\}\). Prove that your answer is
correct.