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91Ó°ÊÓ

Estimate the relative rate of change of \(f(t)=t^{2}\) at \(=10 .\) Use \(\Delta t=0.01\)

Short Answer

Expert verified
The relative rate of change of \( f(t) = t^2 \) at \( t = 10 \) is 0.2.

Step by step solution

01

Define the Relative Rate of Change

The relative rate of change of a function at a point is given by the formula: \( R(t) = \frac{f'(t)}{f(t)} \). Here, \( f(t) = t^2 \). To proceed, we need to find both \( f'(t) \) and \( f(t) \) at \( t = 10 \).
02

Calculate the Derivative

Calculate the derivative of \( f(t) = t^2 \). Using basic differentiation rules, \( f'(t) = 2t \).
03

Evaluate f(t) and f'(t) at t=10

Substitute \( t = 10 \) into both \( f(t) \) and \( f'(t) \):- \( f(10) = 10^2 = 100 \)- \( f'(10) = 2 \times 10 = 20 \)
04

Compute the Relative Rate of Change

Substitute the values found in the previous step into the relative rate of change formula:\[ R(10) = \frac{f'(10)}{f(10)} = \frac{20}{100} = 0.2 \].
05

Interpret the Result

The relative rate of change of \( f(t) = t^2 \) at \( t = 10 \) is 0.2, which means the function is changing at a rate of 20% relative to its value when \( t = 10 \).

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Understanding Calculus
Calculus is a branch of mathematics that focuses on the study of change and motion. It primarily deals with two fundamental concepts: derivatives and integrals. In this context, when we talk about the relative rate of change, we are exploring how a quantity changes relative to another, specifically in calculus terms.

Calculus introduces foundational tools and formulas to tackle problems involving rates of change. For instance, understanding how a parabola such as the function \( f(t) = t^2 \) evolves at a particular point requires the application of derivative techniques.

These problems typically involve finding how quickly one quantity changes with respect to another—a core aspect of calculus that extends to various fields including physics, engineering, and economics. Knowing how to compute and interpret derivatives is central to mastering calculus.
Exploring Differentiation
Differentiation is the process of finding a derivative. A derivative represents an instantaneous rate of change of a function as opposed to an average rate of change. It provides a way to measure how a function changes as its input changes. In the exercise you're analyzing, differentiation helps find the rate at which \(f(t)=t^2\) changes at a specific point, like \(t=10\).

To solve the problem, you start by differentiating \(f(t)=t^2\). The derivative, \(f'(t)=2t\), tells us how the function changes at each point \(t\).

By substituting \(t=10\) into \(f'(t)=2t\), you find \(f'(10)=20\), demonstrating that at this point, the function is increasing at a rate of 20 units per unit time.
  • This rate of change is only immediate—right at \(t=10\)—not over an interval.
  • It shows how calculus provides instant insights into functions' behaviors.
Role of Mathematics Education
Mathematics education plays a crucial role in building students' understanding of concepts such as differentiation and relative rate of change. These principles are fundamental in various STEM fields and everyday problem-solving.

Educational exercises like the one provided help solidify these concepts by giving students practical applications of theoretical ideas.

Incorporating such tasks into learning helps students:
  • Grasp theoretical mathematics by practicing real-world applications.
  • Understand the steps to solve complex problems through a structured approach.
  • Develop critical thinking by interpreting mathematical results.
Effective mathematics education empowers students not only to solve equations but to apply these skills in diverse situations, highlighting mathematics' relevance and utility.

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Most popular questions from this chapter

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