A digital screen displays handwritten math notes. The highlighted text indicates an error in a student's work, stating they wrote "= 3r-2," but the sign of 3r should be a negative sign. The displayed solution shows V = (0,2,3,-1), -2U = (-2,-2,0,2), and 3V = (0,6,9,-3). The notes involve vector calculations, labeled as LGPT 5.2, suggesting it's a learning session where a mistake is being corrected. The instruction includes a message to fix the error in the notebook. in San Andrés Cholula, Mexico

Jan 27, 2026, 4:13 PM

San Andrés Cholula, Mexico

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A digital screen displays handwritten math notes. The highlighted text indicates an error in a student's work, stating they wrote "= 3r-2," but the sign of 3r should be a negative sign. The displayed solution shows V = (0,2,3,-1), -2U = (-2,-2,0,2), and 3V = (0,6,9,-3). The notes involve vector calculations, labeled as LGPT 5.2, suggesting it's a learning session where a mistake is being corrected. The instruction includes a message to fix the error in the notebook.

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