Numerical Methods for Ordinary Differential Equations: Butcher/Numerical Methods
Numerical Methods for Ordinary Differential Equations: Butcher/Numerical Methods
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DOI:
10.1002/0470868279
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发表时间:
2005-01
期刊:
影响因子:
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通讯作者:
Branislav @. Nikoli
中科院分区:
文献类型:
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作者:
Branislav @. Nikoli
and in each case one should label the axes and curves via xlabel, ylabel and legend. One may now experiment with different time spans, initial conditions, and parameters (just a for now). As a second example we encode the molecular switch in equation 29 on page 290 via function dx = switch29(t, x) dx(1, 1) = x(1) − x(1)2− 2 ∗ x(1) ∗ x(2); dx(2, 1) = x(2) − x(2)2− 2 ∗ x(1) ∗ x(2); To better appreciate what ode23 is up to we now embark on our own approximation scheme. It is really just a step back to the early part of the course, for we will replace the differential equation, (1), with the difference equation x1(tn+1) − x1(tn) dt = x1(tn) − x 3 1(tn) − ax2(tn) x2(tn+1) − x2(tn) dt = x1(tn) − x2(tn) (2)