https://www.chegg.com/homework-help/questions-and-answers/exercise-6-consider-following-vectors-r3--v1-1-1-0-v2-3-2-1-v3-3-5-2-verify-general-vector-q44489130?trackid=07b13240e38a&strackid=9ec4da4725ad

https://www.chegg.com/homework-help/questions-and-answers/exercise-6-consider-following-vectors-r--3-8-1-1-v1-v2-2-v3-5-0-verify-general-vector-u-1--q44421373?trackid=e1df13424c25&strackid=25969192c5cc