- #1

NoahsArk

Gold Member

- 237

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- TL;DR Summary
- Not sure why derivatives are sometimes treated as fractions.

I don't understand the logic behind why derivatives can be treated like fractions in solving equations:

## \frac {du}{dx} = 2 ## simplified to

## du = 2dx ##

I keep seeing this done with the explanation that "even though ## \frac {du}{dx} ## is not a fraction, we can treat it like one". Why?

Thanks

## \frac {du}{dx} = 2 ## simplified to

## du = 2dx ##

I keep seeing this done with the explanation that "even though ## \frac {du}{dx} ## is not a fraction, we can treat it like one". Why?

Thanks