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`bar a` and `bar b` are non- collinear vectors. If `barc = (x-2)bar a+bar b` and `bar d = (2x+1)bar a- bar b` are collinear , then find the value of x

A

`4/3`

B

`2/3`

C

`1/3`

D

`-4/3`

Text Solution

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The correct Answer is:
C
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MARVEL PUBLICATION-VECTORS-TEST YOUR GRASP
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  7. If bara.i = 4, then bara.[j xx (2j - 3k)]=

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  8. The vector bar(AB)=3hati+4hatk and bar(AC)=5hati-2hatj+4hatk are the s...

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  9. If veca vecb are non zero and non collinear vectors, then [(veca, vecb...

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  10. If bara,barb,barc are non-coplaner vectors and barp=(barbxxbarc)/([bar...

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  11. If direction ratios of two lines are 2,-6,-3 and 4,3,-1 then directi...

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  14. If the points with position vectors -i + 3j + 2k , -4i + 2j - 2k and 5...

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  15. If bara.barb=barb.barc=barc.bara=0 and bara,barb,barc form a right-han...

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  20. 2i · (j xx k) - 3j · (i xx k) - 4k · (i xx j) =

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