Question

$\ddot{A} = \left| \begin{matrix} my + nz & mq - nr & mb + nc \\ kz - mx & kr - mp & kb - ma \\ nx + ky & np + kq & na + kb \end{matrix} \right|$is equal to

• A. ∆ = 0
• B. ∆≠ 0
• C. ∆ = f(x,y,z)
• D. None

Answer 1

Answer: (A)

∆ = 0

Answer 2

∆ = $\left| \begin{matrix} x & y & z \ p & q & r \ a & b & c \end{matrix} \right|\left| \begin{matrix} 0 & m & n \

• m & 0 & k \
• n & - k & 0 \end{matrix} \right| = 0$.