Example5.3.1
Suppose that the non-zero vector\(\vec{c}\) is in \(span(\vec{a}, \vec{b})\). Show that \(\vec{a}\) is in \(span(\vec{b}, \vec{c})\) or \(\vec{b}\) is in \(span(\vec{a}, \vec{c})\). Is the condition that \(\vec{c} \neq 0\) necessary?
[7 marks]