- #1
SPhy
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Homework Statement
Find an expression equivalent for the derivative of the scalar triple product
a(t) . (b(t) x c(t))
The Attempt at a Solution
Initially I figured since whatever comes out of B X C is being dotted with A, I can use the derivative rules of a dot product:
(a(t)' . (b(t) x c(t))) + ( a(t) . (b(t) x c(t))' )
However, the solution just gives an expression for the scalar triple product in a 3x3 matrix form, that is,a(t) . (b(t) x c(t)) = [ a1 a2 a3
b1 b2 b3
c1 c2 c3 ]
What gives?