Math Problem Statement

^{}Rezolva asta te rog

log_3(2x - 8) = 0

Solution

The given equation is:

log3(2x8)=0\log_3(2x - 8) = 0

Let's solve this step by step:

Step 1: Convert the logarithmic equation into an exponential equation.

The logarithmic equation can be rewritten using the property of logarithms: logb(a)=cis equivalent tobc=a\log_b(a) = c \quad \text{is equivalent to} \quad b^c = a In this case: 30=2x83^0 = 2x - 8

Since 30=13^0 = 1, the equation becomes: 1=2x81 = 2x - 8

Step 2: Solve for xx.

Add 8 to both sides: 1+8=2x1 + 8 = 2x 9=2x9 = 2x

Now, divide by 2: x=92=4.5x = \frac{9}{2} = 4.5

Final Solution:

The value of xx is x=4.5x = 4.5.

Would you like a detailed explanation or have any questions about the steps? Here are a few related questions you might find useful:

  1. What are the properties of logarithms and how are they used in equations like this?
  2. How can you handle more complex logarithmic equations with different bases?
  3. How do you check if the solution of a logarithmic equation is valid in its domain?
  4. Can you explain the relationship between exponential and logarithmic functions?
  5. How do you solve logarithmic equations that involve addition or subtraction of logarithms?

Tip: Always ensure that the argument inside a logarithmic function is positive, as logarithms are not defined for zero or negative values.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Logarithms
Algebra
Exponential Equations

Formulas

log_b(a) = c <=> b^c = a

Theorems

Properties of logarithms
Exponential-logarithmic relationship

Suitable Grade Level

Grades 9-11