Math Problem Statement

Solve for x and y: 3log_2(x) + log_3(y) = -5 -log_2(x) - log_3(y) = 1

Solution

The problem is:

Solve for xx and yy: 3log2(x)+log3(y)=53 \log_2(x) + \log_3(y) = -5 log2(x)log3(y)=1- \log_2(x) - \log_3(y) = 1

To solve this system of equations, let's denote:

  1. a=log2(x)a = \log_2(x)
  2. b=log3(y)b = \log_3(y)

Then the equations become:

  1. 3a+b=53a + b = -5
  2. ab=1-a - b = 1

We can solve this system of linear equations for aa and bb.

  1. Step 1: Add the two equations to eliminate bb. (3a+b)+(ab)=5+1(3a + b) + (-a - b) = -5 + 1 Simplifying, we get: 2a=4a=22a = -4 \Rightarrow a = -2

  2. Step 2: Substitute a=2a = -2 into one of the equations to solve for bb. Using ab=1-a - b = 1: (2)b=1-(-2) - b = 1 2b=1b=12 - b = 1 \Rightarrow b = 1

Now we have: a=2andb=1a = -2 \quad \text{and} \quad b = 1

  1. Step 3: Convert aa and bb back to xx and yy.
    • Since a=log2(x)=2a = \log_2(x) = -2, we have: x=22=14x = 2^{-2} = \frac{1}{4}
    • Since b=log3(y)=1b = \log_3(y) = 1, we have: y=31=3y = 3^1 = 3

Thus, the solution is: x=14andy=3x = \frac{1}{4} \quad \text{and} \quad y = 3

Would you like further details on any part of this solution, or do you have any questions?

Here are 5 related questions for further exploration:

  1. How would you solve this system if the logarithmic bases were different?
  2. What if log2(x)\log_2(x) and log3(y)\log_3(y) had additional coefficients? How would that affect the solution? 3

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Math Problem Analysis

Mathematical Concepts

Algebra
Logarithmic Equations
System of Equations

Formulas

log_b(x) = n implies x = b^n

Theorems

Properties of Logarithms
Systems of Linear Equations

Suitable Grade Level

Grades 10-12