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Please give the solution of the question attached in the image

Please give the solution of the question attached in the image

Question Image
Grade:12

1 Answers

Amit
405 Points
3 years ago
Write the determinent as a sum of two determinents in which one contains 1 and other contains a³,b³,c³. From second determinent take abc common and it becomes (1+abc)(1st determinent). Since it is equal to zero and the determinent is non zero because the three vectors are non coplanar hence 1+abc=0 or abc=-1

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