How does the scalar triple product change when the order of the vectors is altered, according to the properties discussed in the chapter?
The scalar triple product changes sign when the order of the vectors is altered, except when the vectors are cycled. Specifically, if the order of two vectors is switched, the scalar triple product reverses its sign, while a cyclic permutation of the vectors leaves the scalar triple product unchanged.
According to the properties discussed, the scalar triple product of three vectors A, B, and C, denoted as A · (B x C), is unchanged by cyclic permutations of the vectors. However, if the order of the vectors is altered in a non-cyclic manner, such as switching two vectors, the scalar triple product changes its sign. This is a key property of determinants, which are used to compute the scalar triple product.
Key points
- The scalar triple product is A · (B x C).
- Cyclic permutations of vectors do not change the scalar triple product.
- Switching the order of two vectors reverses the sign of the scalar triple product.
Related questions
Advanced Engineering Mathematics
Stroud, K. A, Booth, Dexter J Stroud etc.
4th ed. · Industrial Press, Inc.