Mathematics A-Level
Proportional rates of change
What Proportional rates of change means in Mathematics A-Level, as defined for Pearson Edexcel.
Definition of Proportional rates of change
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Reference: Pearson Edexcel
The rate of change is proportional to the current value, dy/dx = ky, which is exactly the relationship modelled by growth and decay processes.
Topics that use Proportional rates of change
- Exponentials and logarithms (Pearson Edexcel A-Level)
Related terms
- Continuous change
- Differentiation of exponential functions
- Exponential function
- Exponential modelling
- gradient
- inverse functions
- laws of logarithms
- Line of best fit
Using Proportional rates of change in the exam
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