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Let P be the set of names of U.S. presidents, algebra homework help

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Let P be the set of names of U.S. presidents, algebra homework help

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Let D be the set of all calendar dates from 4/30/1789 to 9/25/2014.
Let P be the set of names of U.S. presidents.
Let F be the set of names of first ladies of the U.S.

Consider the following two functions press : D ⇒ P where  pres(d)  is the name of the president of the U.S. on date  d  (the incumbent on inauguration days, to avoid ambiguity) and   lady : P ⇒ F   where   lady(p)   is the name of the first lady of the U.S. during the presidency of president   P.

1. Can the composition  ... View full description