Solve 1/log₄(9): Simplifying Reciprocal Logarithm Expression

Question

1log49= \frac{1}{\log_49}=

Video Solution

Solution Steps

00:00 Solve
00:04 We'll use the formula for dividing 1 by log
00:10 We'll get a log with inverse base and number
00:13 We'll use this formula in our exercise
00:17 And this is the solution to the question

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the property of logarithms that relates inverses.
  • Step 2: Apply this property to the given expression.
  • Step 3: Compare with provided choices to identify the correct option.

Now, let's work through each step:

Step 1: The problem asks us to find the expression equal to 1log49\frac{1}{\log_4 9}.

Step 2: We use the logarithmic property logba=1logab\log_b a = \frac{1}{\log_a b}. Thus, replacing b b with 9 and a a with 4, we have:

1log49=log94\frac{1}{\log_4 9} = \log_9 4.

Step 3: Comparing this result to the provided choices, we find that the correct answer is log94\log_9 4, corresponding to Choice 1.

Therefore, the solution to the problem is log94\log_9 4.

Answer

log94 \log_94