Mathematics A-Level
Half-life and decay constants
What Half-life and decay constants means in Mathematics A-Level, as defined for Pearson Edexcel.
Definition of Half-life and decay constants
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Reference: Pearson Edexcel
In radioactive decay N = N₀e^(−λt), λ is the decay constant and half-life is given by t½ = ln 2 ÷ λ.
Topics that use Half-life and decay constants
- 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 Half-life and decay constants in the exam
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