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Add info on notation (#23041)

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psungchan
2018-11-29 17:07:09 -08:00
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guide/english/mathematics/derivatives/index.md
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@ -4,7 +4,7 @@ title: Derivatives
## Derivatives
The derivative is the instantaneous rate of change of a function, or the rate of change of a function at any particular instant in time. The derivative is a tool of calculus and you can determine it by taking a limit.
The derivative is the instantaneous rate of change of a function, or the rate of change of a function at any particular instant in time. The derivative is a tool of calculus and you can determine it by taking a limit. The common notation for taking the derivative is (dy/dx) but it can be written as (d/dx)y.
You can understand the concept of derivative by comparing it with the concept of slope (the average rate of change) in algebra.