Question: A virologist studies the replication rate of a virus using the equation $ g(x) = x^2 - 4x + 3m $. If the replication rate at $ x = 2 $ equals the rate of a control sample modeled by $ f(x) = x^2 - 4x + m $, find $ m $. - Parker Core Knowledge
Title: How to Solve for m in the Viral Replication Rate Equation Using $ g(x) $ and $ f(x) $
Title: How to Solve for m in the Viral Replication Rate Equation Using $ g(x) $ and $ f(x) $
Meta Description:
Discover how to find the value of $ m $ when comparing viral replication rates using the equations $ g(x) = x^2 - 4x + 3m $ and $ f(x) = x^2 - 4x + m $. Learn exact steps and applications in virology research.
Understanding the Context
Understanding Viral Replication Models in Virology
In virology research, quantifying the replication rate of a virus is critical for understanding infection dynamics, developing antivirals, and comparing different viral strains. Researchers often use mathematical models to describe viral growth rates under various conditions.
One such study involves modeling replication efficiency using quadratic functions, where the rate depends on parameter $ m $. This article explores a key comparison between two viral models—represented by the equations $ g(x) = x^2 - 4x + 3m $ and $ f(x) = x^2 - 4x + m $—to determine the unknown parameter $ m $.
The Problem: Comparing Replication Rates at $ x = 2 $
We are told that at $ x = 2 $, the replication rate modeled by $ g(x) $ equals that of the control sample modeled by $ f(x) $.
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Key Insights
Set both functions equal at $ x = 2 $:
$$
g(2) = f(2)
$$
Substitute $ x = 2 $ into both equations:
$$
(2)^2 - 4(2) + 3m = (2)^2 - 4(2) + m
$$
Step-by-Step Calculation
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- Compute $ (2)^2 - 4(2) $:
$$
4 - 8 = -4
$$
So the equation becomes:
$$
-4 + 3m = -4 + m
$$
- Subtract $ -4 $ from both sides:
$$
3m = m
$$
- Subtract $ m $ from both sides:
$$
2m = 0
$$
- Divide by 2:
$$
m = 0
$$
