Is d/dxf(x) the Same as f'(x) for Finding Derivatives?

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SUMMARY

The discussion clarifies that d/dx(f(x)) is not the same as f'(f(x)). Instead, d/dx is an operator that differentiates a function, while f' is the notation for the derivative of that function. Both notations, d/dx(f(x)) and f'(x), represent the same mathematical concept: the derivative of f(x). Understanding this distinction is crucial for correctly applying differentiation in calculus.

PREREQUISITES
  • Understanding of basic calculus concepts, specifically differentiation.
  • Familiarity with function notation and operators.
  • Knowledge of the notation for derivatives, including f'(x) and df(x)/dx.
  • Basic algebra skills for manipulating equations.
NEXT STEPS
  • Study the properties of derivatives and their applications in calculus.
  • Learn about the Chain Rule for differentiating composite functions.
  • Explore the differences between various notations for derivatives, such as Leibniz and Lagrange notations.
  • Practice solving derivative problems using both d/dx and f' notations.
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Students studying calculus, educators teaching differentiation, and anyone seeking to clarify the concepts of derivatives and their notations.

Jarfi
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ahhh guys, is d/dxf(x)=f'(x)?

I just don't get it, my classmates are finding the deravative of f(x), i'd think that d/dx(f(x))=f'(f(x))=some annoying long equations...

but they get d/dx(f(x))=f'(x)? am I doing a silly mistake here?
 
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Jarfi said:
I just don't get it, my classmates are finding the deravative of f(x), i'd think that d/dx(f(x))=f'(f(x))=some annoying long equations...
Your classmates are right. Your mistake seems to be in thinking that d/dx is the same as f'. It's not. d/dx is an operator that works on a function; f' already is a function.

## \frac{df(x)}{dx}## and f'(x) are essentially two different notations for the same thing.
Jarfi said:
but they get d/dx(f(x))=f'(x)? am I doing a silly mistake here?
 


Mark44 said:
Your classmates are right. Your mistake seems to be in thinking that d/dx is the same as f'. It's not. d/dx is an operator that works on a function; f' already is a function.

## \frac{df(x)}{dx}## and f'(x) are essentially two different notations for the same thing.

damn I'm stupid... well thanks a LOT. It's 1 am but who needs sleep! go homework&euroshopper energy drink
 

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