a=-3i+2j+k ,b=-i+3j+2k ,则a×b=

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a=-3i+2j+k ,b=-i+3j+2k ,则a×b=
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a=-3i+2j+k ,b=-i+3j+2k ,则a×b=
a=-3i+2j+k ,b=-i+3j+2k ,则a×b=

a=-3i+2j+k ,b=-i+3j+2k ,则a×b=
axb =(-3i+2j+k) x (-i+3j+2k)
= -9k+6j + 2k+4i -j-3i
= i+5j-7k