Let f : Z → Z be defined by f(x) = x² + 1, and let C = {1,2,3}. Find f(C), f-¹(C), f¹(f(C)) and f(f-¹(C)).

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter6: Vector Spaces
Section6.5: The Kernel And Range Of A Linear Transformation
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Let f: Z → Z be defined by f(x) = x² + 1, and let C = {1, 2, 3}.
Find f(C), f¯¹(C), f¯¹(f(C)) and f(f−¹(C)).
Transcribed Image Text:Let f: Z → Z be defined by f(x) = x² + 1, and let C = {1, 2, 3}. Find f(C), f¯¹(C), f¯¹(f(C)) and f(f−¹(C)).
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