Math Problem Statement

solve each exponential equation, 8-lnx^5=0

Solution

To solve the equation:

8ln(x5)=08 - \ln(x^5) = 0

we can follow these steps:

Step 1: Isolate the logarithmic term

Move ln(x5)\ln(x^5) to the right side of the equation:

ln(x5)=8\ln(x^5) = 8

Step 2: Use the logarithmic power rule

The power rule of logarithms states that ln(ab)=bln(a)\ln(a^b) = b \ln(a). Applying this rule, we get:

5ln(x)=85 \ln(x) = 8

Step 3: Solve for ln(x)\ln(x)

Divide both sides by 5:

ln(x)=85\ln(x) = \frac{8}{5}

Step 4: Exponentiate both sides

To solve for xx, rewrite the equation in exponential form:

x=e85x = e^{\frac{8}{5}}

Final Answer

So, the solution is:

x=e85x = e^{\frac{8}{5}}

This is the exact answer. For an approximate decimal value, you can calculate:

x4.953x \approx 4.953

Would you like more details or have any other questions?


  1. How does the power rule for logarithms work in different contexts?
  2. How do we solve exponential equations involving other bases?
  3. How can we convert logarithmic equations to exponential form?
  4. What steps are involved when solving for a variable in a natural logarithm?
  5. How does this solution method compare to other methods of solving exponential equations?

Tip: Remember, rewriting logarithmic expressions using rules like the power rule can simplify solving complex logarithmic equations!

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Math Problem Analysis

Mathematical Concepts

Algebra
Exponential Equations
Logarithmic Properties

Formulas

ln(a^b) = b ln(a)
x = e^y for ln(x) = y

Theorems

Power Rule of Logarithms
Exponential-Logarithmic Inverse Relationship

Suitable Grade Level

Grades 10-12