解微分方程组,变某一个参数

par_range.py

import numpy as np

import matplotlib.pyplot as plt

from scipy.integrate import odeint

import matplotlib as mpl

mpl.rcParams["font.family"] = "Helvetica Neue"

from par_range_sm import init, par, rep, par_rand

t = np.......

Python 科学计算第二章图 2-4

代码:

import numpy as np

import matplotlib.pyplot as plt

import matplotlib as mpl

mpl.rcParams['font.family'] = 'Helvetica Neue'

def triangle_wave(x, c, c0, hc):

x = x - int(x)

if x >= c:

r = 0.0

elif x < c0:......

2014-04-24 14:2252PythonNumpyMatplotlib

如何画分岔图

微分方程组 ODEs

Toggle switch 模型:

\begin{aligned}

\newcommand{\dd}{\mathrm{d}}

\frac{\dd X}{\dd t} & = \frac{a_1}{1 + Y^n} - d_1 X + b_1 S,\\

\frac{\dd Y}{\dd t} & = \frac{a_2}{1 + X^n} - d_2 Y + b_2.

\end{aligned}

代码

#!/usr/bin/env python

impor......