यदि `vecA = hati - 2hatj + 4hatk` और `vecB = 3hati - hatj+2hatk` हो तो `vecA xx vecB` ज्ञात करो।

Explanation

`vecA xx vecB = |(hati , hatj, hatk),(1,-2,4),(3,-1,2)|`
`= hati (-4- (-4)) - hatj (2 - 12) + hatk (-1 - (-6))`
`= 10 hatj + 5hatk`