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OpenStudy (anonymous):
An element x of set S is "idempotent for" the operation * if x*x=x. How do I find the idempotent elements of
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OpenStudy (amistre64):
do you have a definition for idempotent, or is that the definition?
jimthompson5910 (jim_thompson5910):
They want you to find which integers will satisfy this equation x+x = x The operation is + so that's why * gets replaced with +
OpenStudy (anonymous):
Oh ok, so it'd be 0 in this case
jimthompson5910 (jim_thompson5910):
correct
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