My father enjoyed watching the USWNT team play Sweden in the World Cup, but he was heartbroken when they lost. “They were so close! They had it!” he said repeatedly. “It is just so disappointing.” He ...

I know to find if a set of vectors are linearly indepenent I have to put them in a matrix and get the rref. if the rref == the identity matrix, then the vectors are linearl independent. but why? can ...