Mathematics A-Level
proportional growth
What proportional growth means in Mathematics A-Level, as defined for WJEC.
Definition of proportional growth
Check what you remember
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Reference: WJEC
The instantaneous rate of change of y = A e^(kx) is directly proportional to the current value of y, satisfying dy/dx = ky.
Topics that use proportional growth
- Exponentials and logarithms (AS Unit 1: Pure Mathematics A) (WJEC A-Level)
Related terms
- ambient temperature baseline
- carrying capacity
- combining logarithms
- domain restrictions
- exponential growth
- exponential models
- fractional coefficients
- gradient and intercept
Using proportional growth in the exam
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