Let a and B Be Vectors $\mathbf { a } \times \mathbf { b } = \mathbf { b } \times \mathbf { a }$

Essay

Let a and b be vectors. Under what conditions is $\mathbf { a } \times \mathbf { b } = \mathbf { b } \times \mathbf { a }$ ? When is $( 2 \mathbf { a } ) \times ( 3 \mathbf { b } ) = 6 ( \mathbf { a } \times \mathbf { b } )$ ?