Difference Quotients: Can They Be Interchanged?

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In summary, the two equations in question are f(x)-f(c)/(x-c) and f(a+h)-f(a)/h, both of which can be used interchangeably. This is achieved by substituting x for a+h and c for a, resulting in h = x-c. However, it is important to note that neither of these is an actual equation due to the lack of an "=" sign.
  • #1
Apost8
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This isn't a homework question, but I'm wondering if the following two equations can always be used interchangeably (thanks in advance):

f(x)-f(c)/(x-c)

and

f(a+h)-f(a)/h
 
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  • #2
yes, it's just substituting x for a+h and c for a, so then h = x-c.
 
  • #3
Do not double post!
 
  • #4
Data said:
yes, it's just substituting x for a+h and c for a, so then h = x-c.

Thanks for your help.

arildno said:
Do not double post!

No need to get upset. I accidentally posted in the wrong section, I apologize. Thanks for your help as well.
 
  • #5
The problem I have with your post is that neither of the "equations" you give is an equation! (The lack of and "= " is a sure sign!)
 

1. What is a difference quotient?

A difference quotient is a mathematical expression used to find the slope of a curve at a specific point. It is essentially the average rate of change between two points on a curve.

2. How is a difference quotient calculated?

To calculate a difference quotient, you must first choose two points on a curve: (x, f(x)) and (x+h, f(x+h)). The difference quotient is then found by taking the limit as h approaches 0 of (f(x+h) - f(x)) / h.

3. Can the difference quotient be used to find the slope of any curve?

Yes, the difference quotient can be used to find the slope of any curve, as long as the curve is continuous and differentiable at the given point.

4. What does it mean to interchange difference quotients?

Interchanging difference quotients means to switch the positions of the two points used in the calculation. This is possible because the order of the points does not affect the final result.

5. Why is it important to understand difference quotients and their interchangeability?

Understanding difference quotients and their interchangeability is important because they are fundamental concepts in calculus and are used to find the derivative of a function. This is essential in many fields of science and engineering, such as physics, economics, and engineering.

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