Math Problem Statement

Solve for
x in the equation below. If there are multiple answers, separate them by commas. Enter exact values as your answer. 3 ln ( 6 x − 5 ) + 4

− 9

Solution

To solve the equation 3ln(6x5)+4=93\ln(6x - 5) + 4 = -9, let's go through it step-by-step.

  1. Isolate the logarithmic term:

    3ln(6x5)=943\ln(6x - 5) = -9 - 4

    3ln(6x5)=133\ln(6x - 5) = -13

  2. Divide both sides by 3 to further isolate the logarithm:

    ln(6x5)=133\ln(6x - 5) = \frac{-13}{3}

  3. Rewrite the equation in exponential form:

    Recall that ln(a)=b\ln(a) = b is equivalent to eb=ae^b = a.

    6x5=e1336x - 5 = e^{\frac{-13}{3}}

  4. Solve for xx:

    6x=e133+56x = e^{\frac{-13}{3}} + 5

    x=e133+56x = \frac{e^{\frac{-13}{3}} + 5}{6}

Thus, the exact solution is:

x=e133+56x = \frac{e^{\frac{-13}{3}} + 5}{6}

This is the only solution as the logarithm function has a single defined value for e133e^{\frac{-13}{3}}.

Would you like more details or have any questions?

Relative Questions:

  1. How do you convert between logarithmic and exponential forms?
  2. What is the value of e133e^{\frac{-13}{3}} approximately?
  3. How do you solve logarithmic equations with different bases?
  4. What are the restrictions on the domain of ln(6x5)\ln(6x - 5)?
  5. Can logarithmic equations have multiple solutions?

Tip: Always check if the argument of the logarithm is positive for all values of xx in the solution set.

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Math Problem Analysis

Mathematical Concepts

Logarithmic Equations
Exponential Functions

Formulas

ln(a) = b ⇔ e^b = a
Basic logarithmic properties: ln(x) rules

Theorems

Logarithmic-Exponential Conversion

Suitable Grade Level

Grades 10-12