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85) Which operation

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85) Which operation

by ern5231 » Wed May 12, 2010 10:32 pm
delta represents +, -, or *. delta is actually which operation?
(1) from a delta (-a) introduction of a = 0
(2) a delta (b delta c) = (a delta b) delta c

Why can't we have A as an answer? Only + gives this result
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by liferocks » Wed May 12, 2010 10:50 pm
not exactly sure about the first condition completely..'introduction of' not defined..but if you mean a delta (-a)=0 is possible only for +..then for all +,-,* this is true if a=0
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