definition of exponential decay

[flat sundial]

when a quantity decreases by a constant factor in equal (time) intervals

is this right?

[final shuttle]

1. Wait patiently for a helper to come along.
2. Once someone helps you, say thank you and close the thread with: ```diff
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[rancid garnet]

the definition is when a variable decay's at a rate proportional to it's current value

the derivative definition is:
$\frac{dN}{dt}=-\lambda N$

[wicked folio]

agex