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प्रश्न
Find `bar"a".(bar"b" xx bar"c")` if `bar"a" = 3hat"i" - hat"j" + 4hat"k" , bar"b" = 2hat"i" + 3hat"j" - hat"k"` and `bar"c" = - 5hat"i" + 2hat"j" + 3hat"k"`
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उत्तर
`bar"a".(bar"b" xx bar"c") = |(3,-1, 4),(2,3,-1),(-5,2,3)|`
= 3(9 + 2) +1(6 - 5) + 4(4 + 15)
= 33 + 1 + 76
= 110
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संबंधित प्रश्न
If `bara=3hati-hatj+4hatk, barb=2hati+3hatj-hatk, barc=-5hati+2hatj+3hatk` then `bara.(barbxxbarc)=`
(A) 100
(B) 101
(C) 110
(D) 109
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