Mathematics A-Level
exponential decay
What exponential decay means in Mathematics A-Level, as defined for WJEC.
Definition of exponential decay
Check what you remember
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Reference: WJEC
A model where k < 0, often written y(t) = y₀ e^(−λt) with λ > 0, so the initial value decreases towards zero as t → ∞.
Topics that use exponential decay
- 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 exponential decay in the exam
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