How do I find the multiplier for a rate of exponential decay?
This depends on what you already know. I'll do two examples:
First to know :
Decay follows the formula:
You know that decay is 5% per period. So after each period the value is only 95% of the period before. You "growth" (decay) factor is then
Bit more complicated:
A radio-active object has a half-life of 4 days, what is the decay-factor (per day)?
Which means it will lose almost 16% of its activity per day (check!)
Instead of using
You key in x^(1/t) with the right numbers, e.g. 0.5^(1/4)