Math Problem Statement

log(8x/10)

Solution

The expression log(8x10)\log\left(\frac{8x}{10}\right) can be simplified. Here's the step-by-step process:

Step 1: Simplify the fraction

8x10=4x5\frac{8x}{10} = \frac{4x}{5} Now, the expression becomes: log(4x5)\log\left(\frac{4x}{5}\right)

Step 2: Apply the logarithm property

Using the logarithmic property log(ab)=log(a)log(b)\log\left(\frac{a}{b}\right) = \log(a) - \log(b), we can rewrite this as: log(4x)log(5)\log(4x) - \log(5)

Step 3: Apply the product rule

Next, we can apply the product rule log(ab)=log(a)+log(b)\log(ab) = \log(a) + \log(b) to log(4x)\log(4x): log(4x)=log(4)+log(x)\log(4x) = \log(4) + \log(x) Now, substitute this back into the previous expression: log(4)+log(x)log(5)\log(4) + \log(x) - \log(5)

Step 4: Combine constants

Since log(4)\log(4) and log(5)\log(5) are constants, the simplified expression becomes: log(x)+log(4)log(5)\log(x) + \log(4) - \log(5)

This is the fully simplified form of the expression.


Would you like to see more details on logarithmic properties or specific examples?

Here are 5 related questions:

  1. How would you simplify log(6x15)\log\left(\frac{6x}{15}\right)?
  2. What is the value of log(4)log(5)\log(4) - \log(5) using base 10 logarithms?
  3. Can you expand log(100x)\log(100x) using logarithmic properties?
  4. How does the change of base formula work with logarithms?
  5. How do logarithmic functions behave with negative inputs?

Tip: Remember that logarithms are undefined for non-positive numbers like x0x \leq 0. Always ensure your domain excludes such values when solving equations involving logarithms.

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Math Problem Analysis

Mathematical Concepts

Logarithms
Fraction Simplification
Logarithmic Properties
Product Rule

Formulas

log(a/b) = log(a) - log(b)
log(ab) = log(a) + log(b)

Theorems

Logarithmic properties

Suitable Grade Level

Grades 9-12