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Let 

f(x)={k(x)if x>2,2+(x2)2if x2.

Find the function k(x) such that f is its own inverse.

 Mar 10, 2021
 #1
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Since we want k(x) to be its own inverse, k(x) = 2 + (x - 2)^2 = x^2 - 4x + 6.

 Mar 21, 2021

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