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Topic: Functions need Help
Replies: 3   Last Post: Apr 9, 2012 6:31 PM

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butters1

Posts: 2
Registered: 4/5/12
Functions need Help
Posted: Apr 5, 2012 7:50 AM
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Let f : A ? B be a function, with S, T ? A. Show that f[S] ? f[T] ? f[S ? T]. Give an example where equality fails.

I dont understand how to start this.



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