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Set up exponential growth/decay model (#511)
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Set up exponential growth/decay model (#511)
Use
y
=
A
e
k
t
y = A e^{kt}
y
=
A
e
k
t
or
y
=
A
a
t
y = A a^{t}
y
=
A
a
t
with initial value and growth/decay rate.