For three vectors ` vec u , vec va n d vec w` which of the following expressions is not equal to any of the remaining three ? ` vec udot( vec vxx vec w)` b. `( vec vxx vec w)dot vec u` c. ` vec vdot( vec uxx vec w)` d. `( vec uxx vec v)dot vec w`

Options

A. `vecu.(vecvxx vecw)`
B. `(vecvxx vecw).vecu`
C. `vecv.(vecuxx vecw)`
D. `(vecuxx vecv).vecw`

Answer

c

Explanation

`[ vecu vecv vecw] = [vecv vecw vecu] = [vecw vecu vecv]`
but `[vecv vecu vecw]=- [vecu vecv vecw]`