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+2 votes
in Mathematics by (67.4k points)

If the vector p=ai+j+k, vector q =i+bj+k and vector r= i+j+ck are coplanar,then for a,b,c 1, then show that.


1 Answer

+3 votes
by (83.6k points)
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Dividing both the sides by (1. - a)(1- b)(1 -c), we get

a/1-a + 1/1-b +1/1-c =0

by (10 points)
what is R ???
by (9.0k points)
Here R is rows
by (14 points)
How a(b-1)(c-1) changes to a(1-b)(1-c)?????!!!!!!!!
by (21.3k points)
By taking  -1 common from (b-1) and (c-1) then it becomes -a(1-b) x -(1-c)= a(1-b)(1-c)

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