1c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan KamathMatrixXf mat(2,2); 2c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathmat << 1, 2, 4, 7; 3c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathcout << "Here is the matrix mat:\n" << mat << endl << endl; 4c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 5c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathmat = 2 * mat; 6c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathcout << "After 'mat = 2 * mat', mat = \n" << mat << endl << endl; 7c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 8c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 9c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathmat = mat - MatrixXf::Identity(2,2); 10c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathcout << "After the subtraction, it becomes\n" << mat << endl << endl; 11c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 12c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 13c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan KamathArrayXXf arr = mat; 14c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamatharr = arr.square(); 15c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathcout << "After squaring, it becomes\n" << arr << endl << endl; 16c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath 17c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamath// Combining all operations in one statement: 18c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathmat << 1, 2, 4, 7; 19c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathmat = (2 * mat - MatrixXf::Identity(2,2)).array().square(); 20c981c48f5bc9aefeffc0bcb0cc3934c2fae179ddNarayan Kamathcout << "Doing everything at once yields\n" << mat << endl << endl; 21