D N d t l N. A quantity is subject to exponential decay if it decreases at a rate proportional to its current value. To describe these numbers we often use orders of magnitude.
Ln 6 2k.
Write the formula for radioactive decay. P C 1 rn nt. N N 0 e l t displaystyle NN_0e-lambda t where N is the quantity at time t N0 N is the initial. Exponential decay and exponential growth are used in carbon dating and other real-life applications.