Problem 77

Question

Evaluate each expression without using a calculator. $$\log _{3}\left(\log _{7} 7\right)$$

Step-by-Step Solution

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Answer
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1Step 1: Evaluate the Inner Logarithm
The first task is to simplify the expression \(\log _{7} 7\). Because the base of the logarithm and the number are the same (both 7), we can apply the property of logarithms that \(\log_b b = 1\). Thus, \(\log _{7} 7 = 1\).
2Step 2: Evaluate the Outer Logarithm
Now, we evaluate the outer logarithm using the result from Step 1. The expression \(\log _{3}(1)\) is the logarithm base 3 of 1. Since any number to the power of 0 is 1, we have that \(\log _{3}(1) = 0\).