What Does the Integral of a Child's Growth Rate Represent?

In summary, the total change theorem, also known as the chain rule, is a mathematical theorem that allows us to calculate the total change in a function when its input variables change. It is important because it helps us to analyze complex functions and understand how small changes in the input variables affect the output. To apply it, we need to identify the composite function and use the formula for the chain rule. It has many real-world applications, but it does have limitations such as only being applicable to differentiable functions and requiring a good understanding of calculus and algebra.
  • #1
karush
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If ${w}^{’} \left(t\right)$ is the rate of growth of a child in pounds per year, what does $\int_{5}^{10} {w}^{’}\left(t\right)dt$ represent?
 
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  • #2
Given that:

\(\displaystyle dw=w'(t)\,dt\)

Then the integral becomes (exchanging one dummy variable for another):

\(\displaystyle \int_{w(5)}^{w(10)}\,du=w(10)-w(5)\)

So, what does that represent?
 
  • #3
The increase in the child's weigh lbs between the ages of 5 & 10
 
  • #4
karush said:
The increase in the child's weigh lbs between the ages of 5 & 10

Yes, that's correct. (Yes)
 

Related to What Does the Integral of a Child's Growth Rate Represent?

1. What is the total change theorem?

The total change theorem, also known as the chain rule, is a mathematical theorem that allows us to calculate the total change in a function when its input variables change. It is used to find the derivative of a composite function.

2. Why is the total change theorem important?

The total change theorem is important because it allows us to analyze complex functions by breaking them down into simpler parts. It also helps us to understand how small changes in the input variables affect the output of a function.

3. How do you apply the total change theorem?

To apply the total change theorem, you need to first identify the composite function and its individual parts. Then, you can use the formula for the chain rule to calculate the derivative of the composite function.

4. Can the total change theorem be used in real-world applications?

Yes, the total change theorem has many real-world applications in fields such as physics, economics, and engineering. It is used to model and analyze complex systems and make predictions about their behavior.

5. Are there any limitations to the total change theorem?

While the total change theorem is a powerful tool, it does have some limitations. It can only be applied to differentiable functions, and it may not work for functions with discontinuities or sharp corners. It also requires a good understanding of calculus and algebra to use effectively.

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