20 lines
454 B
C++
20 lines
454 B
C++
#include <iostream>
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#include "Eigen/Dense" // #include <Eigen/Dense>
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int main() {
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// 定义矩阵
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Eigen::MatrixXd A(4, 4);
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A << 2, 1, 1, 0,
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1, 3, 1, 1,
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1, 1, 4, 1,
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0, 1, 1, 5;
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// 求逆矩阵
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Eigen::MatrixXd A_inv = A.inverse();
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std::cout << "A:\n" << A << std::endl;
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std::cout << "\nA_inv:\n" << A_inv << std::endl;
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std::cout << "\nA*A_inv:\n" << A * A_inv << std::endl;
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return 0;
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} |