2021 JMPSC Accuracy Problems/Problem 4
Revision as of 11:23, 11 July 2021 by Geometry285 (talk | contribs)
Contents
Problem
If is its own reciprocal, find the product of all possible values of
Solution
From the problem, we know that
Thus, or . Our answer is
~Bradygho
Solution 2
We have , so . By Vieta's our roots and amount to
~Geometry285
Solution 3
Therefore, the product of the root is
~kante314