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数学建模习题2.8

时间:2024-10-14 22:36:28浏览次数:7  
标签:建模 print range 2.8 np 习题

import numpy as np

初始化系数矩阵A和常数项向量b

n = 1000
A = np.zeros((n, n))
b = np.arange(1, n+1)

填充系数矩阵A

for i in range(n):
A[i, i] = 4 # 对角线元素为4
if i < n-1:
A[i, i+1] = 1 # 每一行的下一个元素为1
if i > 0:
A[i, i-1] = 1 # 每一行的上一个元素为1(除了第一行)

求解线性方程组 Ax = b

x = np.linalg.solve(A, b)

打印解

print("解向量 x:")
for i in range(n):
print(f"x{i+1} = {x[i]:.4f}")

print("学号:2023310143005")

标签:建模,print,range,2.8,np,习题
From: https://www.cnblogs.com/vvlin/p/18466346

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