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例题2.1代码 import numpy as np a = [] with open('F:\python数学建模与算法\第二章例题\data2_2.txt') as f: for (i, s) in enumerate(f): a.append([s.count('a'), s.count('c 阅读全文
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习题5.5代码 把max放进约束条件,不妨假定小于等于10000 linprog from scipy.optimize import linprog c=[0,0,3,2] A=[[-1,-1,0,0],[0,0,-1,-1],[3,0,2,0],[0,3,0,2],[100,90,80,70]] 阅读全文
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习题5.4代码 import numpy as np import math from scipy.optimize import minimize, Bounds def func(x): return sum(math.sqrt(x[i]) for i in range(100)) def co 阅读全文
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习题2.5代码 import numpy as np import matplotlib.pyplot as plt from mpl_toolkits.mplot3d import Axes3D # 参数 a = 2 b = np.sqrt(10) c = np.sqrt(8) # 创建u和v的网 阅读全文
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习题2.1代码 import numpy as np import pandas as pd import sympy as sp sp.init_printing(use_unicode=True) import matplotlib.pyplot as plt plt.rcParams['fon 阅读全文
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习题2.2代码 import numpy as np import pandas as pd import sympy as sp sp.init_printing(use_unicode=True) import matplotlib.pyplot as plt plt.rcParams['fon 阅读全文
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习题2.3代码 import numpy as np import pandas as pd import sympy as sp sp.init_printing(use_unicode=True) import matplotlib.pyplot as plt plt.rcParams['fon 阅读全文
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习题2.4代码 import numpy as np import pandas as pd import sympy as sp sp.init_printing(use_unicode=True) import matplotlib.pyplot as plt plt.rcParams['fon 阅读全文
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习题2.6代码 import numpy as np import pandas as pd import sympy as sp sp.init_printing(use_unicode=True) import matplotlib.pyplot as plt plt.rcParams['fon 阅读全文
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习题2.7代码 import numpy as np import pandas as pd import sympy as sp sp.init_printing(use_unicode=True) import matplotlib.pyplot as plt plt.rcParams['fon 阅读全文