Questions: When solving the equation 3^x=5
choose all correct answers
Take the natural logarithm of both sides to get
ln(3^x)=ln(5) which simplifies to x=ln(5)
Use the base 10 logarithm and the property log(m^n)=n log(m) to get log(3^x)=log(5) which simplifies to x log(3)=log(5)
Then divide both sides by log(3)
Use the natural logarithm and the property ln(m^n)=n ln(m) to get ln(3^x)=ln(5) which simplifies to x ln(3)=ln(5)
Then divide both sides by ln(3)
Raise both sides to the 1/x power to get
3=5^(1/x)
Transcript text: When solving the equation $3^{x}=5$
choose all correct answers
Take the natural logarithm of both sides to get
$\ln \left(3^{x}\right)=\ln (5)$ which simplifies to $x=\ln (5)$
Use the base 10 logarithm and the property $\log \left(m^{n}\right)=n \log (m)$ to get $\log \left(3^{x}\right)=\log (5)$ which simplifies to $x \log (3)=\log (5)$
Then divide both sides by $\log (3)$
Use the natural logarithm and the property $\ln \left(m^{n}\right)=n \ln (m)$ to get $\ln \left(3^{x}\right)=\ln (5)$ which simplifies to $x \ln (3)=\ln (5)$
Then divide both sides by $\ln (3)$
Raise both sides to the $\frac{1}{x}$ power to get
\[
3=5^{1 / x}
\]
Solution
Solution Steps
To solve the equation \(3^x = 5\), we can use logarithms to isolate \(x\). Here are the steps:
Take the natural logarithm (ln) of both sides of the equation.
Use the property of logarithms \(\ln(a^b) = b \ln(a)\) to simplify.
Solve for \(x\) by isolating it on one side of the equation.
Step 1: Take the Natural Logarithm of Both Sides
Given the equation \(3^x = 5\), we take the natural logarithm of both sides:
\[
\ln(3^x) = \ln(5)
\]
Step 2: Apply the Logarithm Power Rule
Using the property of logarithms \(\ln(a^b) = b \ln(a)\), we can simplify the left-hand side:
\[
x \ln(3) = \ln(5)
\]
Step 3: Solve for \(x\)
To isolate \(x\), we divide both sides by \(\ln(3)\):
\[
x = \frac{\ln(5)}{\ln(3)}
\]
Step 4: Calculate the Value of \(x\)
Using the values of the natural logarithms:
\[
\ln(5) \approx 1.6094 \quad \text{and} \quad \ln(3) \approx 1.0986
\]
we get:
\[
x \approx \frac{1.6094}{1.0986} \approx 1.465
\]