习题2.7（2）
1.代码实现
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import numpy as np
a = np.array([[2, 3, 1], [1, -2, 4], [3, 8, -2], [4, -1, 9]])
b = np.array([4, -5, 13, -6])
# 最小二乘解
x3 = np.linalg.pinv(a) @ b
print("最小二乘解为：", np.round(x3, 4))
print("学号：3014")
2.运行结果
1.代码实现
import numpy as np
a = np.array([[2, 3, 1], [1, -2, 4], [3, 8, -2], [4, -1, 9]])
b = np.array([4, -5, 13, -6])
# 最小二乘解
x3 = np.linalg.pinv(a) @ b
print("最小二乘解为：", np.round(x3, 4))
print("学号：3014")
2.运行结果