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veca =3veci+4vecj-6veck vecb =2veci+5v...

`veca =3veci+4vecj-6veck`
` vecb =2veci+5vecj+3veck`
Find `veca xx vecb`

Text Solution

Verified by Experts

`veca xx vecb= abs((i,j,k),(2,3,-2),(4,-1,5))`
`=i(3xx5 -(-1)(-2))-j(2xx5_4(-2))+k(2xx(-1)-4xx3)`
=`i(15-2)-j(10+8)+k(-2-12)`
=13i-18j-14k.
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