Math Problem Statement

11 log ( x + 7 ) = 7

Solution

To solve the equation 11log(x+7)=711 \log(x + 7) = 7, follow these steps:

  1. Isolate the logarithmic term: log(x+7)=711\log(x + 7) = \frac{7}{11}

  2. Rewrite the equation in exponential form: Since log(x+7)\log(x + 7) refers to the logarithm with base 10 (common logarithm), the equation can be rewritten as: x+7=10711x + 7 = 10^{\frac{7}{11}}

  3. Subtract 7 from both sides: x=107117x = 10^{\frac{7}{11}} - 7

  4. Calculate 1071110^{\frac{7}{11}}: 107112.05110^{\frac{7}{11}} \approx 2.051 So: x2.0517=4.949x \approx 2.051 - 7 = -4.949

Thus, the solution is approximately x4.949x \approx -4.949.

Would you like further details or have any questions?


Here are five related questions to deepen your understanding:

  1. How do you solve logarithmic equations with different bases?
  2. What is the general method to convert a logarithmic equation to an exponential form?
  3. How do you handle logarithmic equations with multiple logarithms?
  4. What is the importance of the domain in logarithmic functions?
  5. How do you solve exponential equations that involve logarithms?

Tip: Always check if the argument inside the logarithm is positive, as the logarithm of a non-positive number is undefined.

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Math Problem Analysis

Mathematical Concepts

Algebra
Logarithms
Exponential Functions

Formulas

Logarithmic equation: log_b(x) = y -> x = b^y

Theorems

Properties of Logarithms

Suitable Grade Level

Grades 9-11