Difference between revisions of "2000 AIME II Problems/Problem 9"

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== Solution ==
 
== Solution ==
 
{{solution}}
 
{{solution}}
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Note that if z is on the unit circle in the complex plane, then
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Let <math>z = a + bi</math> and we have <math>z = e^i\theta</math>  and <math>\frac 1z= e^{-i\theta}</math>
  
 
== See also ==
 
== See also ==
 
{{AIME box|year=2000|n=II|num-b=8|num-a=10}}
 
{{AIME box|year=2000|n=II|num-b=8|num-a=10}}

Revision as of 18:35, 3 January 2008

Problem

Given that $z$ is a complex number such that $z+\frac 1z=2\cos 3^\circ$, find the least integer that is greater than $z^{2000}+\frac 1{z^{2000}}$.

Solution

This problem needs a solution. If you have a solution for it, please help us out by adding it. Note that if z is on the unit circle in the complex plane, then Let $z = a + bi$ and we have $z = e^i\theta$ and $\frac 1z= e^{-i\theta}$

See also

2000 AIME II (ProblemsAnswer KeyResources)
Preceded by
Problem 8
Followed by
Problem 10
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
All AIME Problems and Solutions