1969 AHSME Problems/Problem 17
Problem
The equation is satisfied by:
Solution
Let . Because , the given expression can be rewritten as . This can be factored as , which has solutions and . Looking at the answer choices, we see that is absent. Rewriting as and then applying the logarithm addition identity in reverse gives . Applying the logarithm division identity shows that the answer is .
See also
1969 AHSC (Problems • Answer Key • Resources) | ||
Preceded by Problem 16 |
Followed by Problem 18 | |
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