The derivative function of the exponential growth model, an example of a one- dimensional autonomous ODE system.
exponential(t, y, parameters)Returns a list containing the value of the
derivative at (t, y).
The value of t, the independent
variable, to evaluate the derivative at. Should be a
numeric vector of
length one.
The value of y, the dependent
variable, to evaluate the derivative at. Should be a
numeric vector of
length one.
The values of the parameters of the system. Should be a
numeric vector prescribing the value
of β.
Michael J Grayling
exponential evaluates the derivative of the following ODE at the point
(t, y):
Its format is designed to be compatible with ode from
the deSolve package.
ode