System programming and Digitan Design
System Programming and digital design archives
Wednesday, February 6, 2013
Null elements (1.5)
x+1 = 1
x•0 = 0
Prove by
perfect induction
: consider all values of x and verify equality.
– 0+1 = 1, 1+1 = 1
– 0•0 = 0, 1•0 = 0 (complement)
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