1974 AHSME Problems/Problem 6
Problem
For positive real numbers and define ' then
Solution
First, let's check for commutivity. We have , so is commutative.
Now we check for associativity. We have Also, and so is also associative.
See Also
1974 AHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 5 |
Followed by Problem 7 | |
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