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[136] | 1 | #include <iostream>
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| 2 | #include <Eigen/Dense>
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| 3 |
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| 4 | using namespace std;
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| 5 | using namespace Eigen;
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| 6 |
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| 7 | int main()
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| 8 | {
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| 9 | Matrix2f A, b;
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| 10 | LLT<Matrix2f> llt;
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| 11 | A << 2, -1, -1, 3;
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| 12 | b << 1, 2, 3, 1;
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| 13 | cout << "Here is the matrix A:\n" << A << endl;
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| 14 | cout << "Here is the right hand side b:\n" << b << endl;
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| 15 | cout << "Computing LLT decomposition..." << endl;
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| 16 | llt.compute(A);
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| 17 | cout << "The solution is:\n" << llt.solve(b) << endl;
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| 18 | A(1,1)++;
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| 19 | cout << "The matrix A is now:\n" << A << endl;
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| 20 | cout << "Computing LLT decomposition..." << endl;
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| 21 | llt.compute(A);
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| 22 | cout << "The solution is now:\n" << llt.solve(b) << endl;
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| 23 | }
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