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If veca = a(1) hati + a(2) hatj + a(3) h...

If `veca = a_(1) hati + a_(2) hatj + a_(3) hatk`
`vecb = vecb_(1) hati+ b_(2) hatj+ b_(3)hatk`
and `vecc = c_(1) hati + c_(2) hatj + c_(3) hatk`
Expresses `[ veca vecb vecc ]` as a determinanr.

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