Math Problem Statement

Solve for x: log(x^2) = (log(x))^2. Note, there are 2 solutions, A and B, where A < B.

Solution

Let's solve the given equation step by step:

The problem is to solve for xx in the equation:

log(x2)=(log(x))2\log(x^2) = (\log(x))^2

Step 1: Simplify log(x2)\log(x^2)

Using the logarithmic property log(ab)=blog(a)\log(a^b) = b\log(a), we rewrite: log(x2)=2log(x)\log(x^2) = 2\log(x)

So, the equation becomes: 2log(x)=(log(x))22\log(x) = (\log(x))^2

Step 2: Rearrange the equation

Rewriting it in standard form: (log(x))22log(x)=0(\log(x))^2 - 2\log(x) = 0

Factorizing: log(x)(log(x)2)=0\log(x) \big(\log(x) - 2\big) = 0

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

From the factorized equation, we have two solutions:

  1. log(x)=0\log(x) = 0
  2. log(x)2=0\log(x) - 2 = 0, which gives log(x)=2\log(x) = 2

Step 4: Solve for xx

For log(x)=0\log(x) = 0: x=100=1x = 10^0 = 1

For log(x)=2\log(x) = 2: x=102=100x = 10^2 = 100

Final Solution

The two solutions are: A=1,B=100A = 1, \quad B = 100

Would you like me to clarify any step further?


Here are some additional related questions for practice:

  1. How do logarithmic properties simplify complex equations?
  2. Can you solve log(x3)=(log(x))3\log(x^3) = (\log(x))^3 for xx?
  3. What happens if the logarithm base is not 10 in this problem?
  4. How does changing the base of the logarithm affect the solution?
  5. Can you rewrite log(x)\log(x) using natural logarithms, and solve?

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Math Problem Analysis

Mathematical Concepts

Logarithmic Equations
Algebra

Formulas

log(a^b) = b * log(a)
10^log(a) = a

Theorems

Properties of Logarithms

Suitable Grade Level

Grades 10-12