Four Zeros with an Absolute

Problem

The function

f(x)=x2(x4)2ax2+2af(x) = x^2(x-4)^2 - a|x - 2| + 2a

has exactly 44 zeros. Find the range of possible values of the real number aa.

Answer

Solution

Difficulty8/10
Topicsfunctions, Substitution, Absolute Value, Casework

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