1.

यदि ` veca = hati + hatj + hatk , vecb = 2 hati + hatj + 2 hatk ` और ` vecc = 3 hati + hatj + 3 hatk` तो ` [ veca " " vecb" "vecc]` का मान ज्ञात कीजिए ।

Answer» ` [ veca " " vecb" " vecc] =|{:( 1,1,-1),( 2,1,2),( 3,1,3):}|`
`= 1 ( 3-2 ) -1 ( 6-6) + (-1) ( 2-3)`
`= 1-0+1 =2`


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