Validating the Chain Rule in Calculus

In summary, the conversation discusses the validity of the chain rule and the speaker's doubts about the "error term" becoming 0 as h approaches 0. The speaker also questions their textbook and its explanation of setting g2=g(x+h) and the discrepancy in the limit of E(g(x)) as h approaches 0.
  • #1
Jimmy Chung
7
0
Is this proof of the chain rule valid ?
 

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  • #2
How did you get this?
Did you write this yourself?
 
  • #3
It's from a textbook...I just re-typed it into a word doc...
 
  • #4
Is it correct...I suspect there maybe some circular reasoning with the "error term" becoming 0 as h approaches 0.
 
  • #5
It looks valid to me, but just tell us why you do not trust your book. At which part.
 
  • #6
Can you explain to be the part on the bottom when we set g2=g(x+h) but E(g2) turns into E(g(x)) not E(g(x+h)) ?

If that's valid, why is the limit as h approaches 0 of E(g(x)) is 0 ?
 

1. What is the Chain Rule in Calculus?

The Chain Rule in Calculus is a rule that allows us to find the derivative of a composite function. It states that the derivative of a composite function is equal to the derivative of the outer function multiplied by the derivative of the inner function.

2. Why is it important to validate the Chain Rule?

Validating the Chain Rule is important because it ensures that we are using the correct method to find the derivative of a composite function. It also helps us to understand the underlying concepts and principles behind the rule, which can aid in solving more complex problems in Calculus.

3. How can the Chain Rule be validated?

The Chain Rule can be validated by using it to find the derivative of a composite function and then comparing the result to the derivative found using the basic rules of differentiation. If the two derivatives are equal, then the Chain Rule has been validated.

4. Can the Chain Rule be applied to any composite function?

Yes, the Chain Rule can be applied to any composite function, as long as the inner and outer functions are both differentiable. It is a general rule that can be used in various situations, making it a powerful tool in Calculus.

5. Are there any common mistakes when using the Chain Rule?

One common mistake when using the Chain Rule is forgetting to multiply by the derivative of the inner function. It is important to remember that the Chain Rule involves multiplying two derivatives together. Another mistake is mixing up the order of the functions, which can lead to incorrect results.

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