Triple Product Expansion
This is a very useful identity (also known as Lagrange's formula) involving the dot- and cross-products. It is written as:
which is easier to remember as "BAC minus CAB", keeping in mind which vectors are dotted together. This formula is commonly used to simplify vector calculations in physics.
Read more about this topic: Dot Product
Famous quotes containing the words triple, product and/or expansion:
“The triple pillar of the world transformed
Into a strumpet’s fool.”
—William Shakespeare (1564–1616)
“These facts have always suggested to man the sublime creed that the world is not the product of manifold power, but of one will, of one mind; and that one mind is everywhere active, in each ray of the star, in each wavelet of the pool; and whatever opposes that will is everywhere balked and baffled, because things are made so, and not otherwise.”
—Ralph Waldo Emerson (1803–1882)
“Artistic genius is an expansion of monkey imitativeness.”
—W. Winwood Reade (1838–1875)