In 4149 let X and Y be sets, let A and B be any subsets of X, and let C and D be any
Chapter 7, Problem 48(choose chapter or problem)
In 41–49 let X and Y be sets, let A and B be any subsets of X, and let C and D be any subsets of Y . Determine which of the properties are true for all functions F from X to Y and which are false for at least one function F from X to Y . Justify your answers.
For all subsets C and D of Y , \9F^{-1}(C-D)=F^{-1}(C)-F^{-1}(D)\).
Text Transcription:
F^-1 (C-D)=F^-1 (C)-F^-1 (D)
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