Question
Solve the following logarithmic equation. \[ \log _{3} x=3 \]
Ask by Phillips Osborne. in the United States
Jan 22,2025
Real Tutor Solution
Tutor-Verified Answer
Answer
\( x = 27 \)
Solution
To solve the logarithmic equation:
\[
\log_{3} x = 3
\]
**Step 1: Understand the Logarithmic Equation**
The equation \(\log_{3} x = 3\) asks for the value of \(x\) such that when you take the logarithm of \(x\) with base \(3\), you get \(3\).
**Step 2: Rewrite the Logarithmic Equation in Exponential Form**
Recall that the logarithmic equation \(\log_{b} a = c\) can be rewritten in its exponential form as:
\[
b^{c} = a
\]
Applying this to our equation:
\[
3^{3} = x
\]
**Step 3: Calculate the Exponential Expression**
Now, compute \(3^{3}\):
\[
3^{3} = 3 \times 3 \times 3 = 27
\]
**Step 4: Write the Solution**
Thus, the solution to the equation is:
\[
x = 27
\]
**Verification (Optional):**
To verify, substitute \(x = 27\) back into the original equation:
\[
\log_{3} 27 = 3
\]
Since \(3^{3} = 27\), the equation holds true.
**Final Answer:**
\[
x = 27
\]
Reviewed and approved by the UpStudy tutoring team
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Mind Expander
To solve the equation \( \log_{3} x = 3 \), we can use the definition of logarithms. The equation states that \( x \) is the number that gives us 3 when we take the logarithm base 3. In exponential form, this can be rewritten as: \[ x = 3^3 \] Calculating \( 3^3 \): \[ x = 27 \] Thus, the solution to the equation is: \[ x = 27 \]