• A vector with magnitude equal to the volume of a parallelepiped formed by the three vectors
  • Can be derived by observing a parallelepiped
a_{x} & a_{y} & a_{z} \\ b_{x} & b_{y} & b_{z} \\ c_{x} & c_{y} & c_{z} \end{vmatrix}$$ ## $\displaystyle \vec{a}\cdot(\vec{b}\times \vec{c})=(\vec{a}\times \vec{b})\cdot \vec{c}$ * Follows from top equation ## Mnemonic * The vector ordering are all even parity, so you may just cycle the vectors right or leftward $\text{Triple Scalar Product}$ $$\vec A\vec B\vec C=\det\begin{bmatrix} A_x & A_y & A_z\\ B_x & B_y & B_z\\ C_x & C_y & B_z \end{bmatrix} = \vec A \cdot (\vec B \times \vec C) = (\vec A \times \vec B) \cdot \vec C = \text{even permutations of }\vec A \vec B \vec C = -\text{(odd permutations of }\vec A \vec B \vec C)$$