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If veca=hati+hatj+hatk,vecb=2hati+xhatj+...

If `veca=hati+hatj+hatk,vecb=2hati+xhatj+hatk,vecc=hati-hatj+4hatk` and `veca.(vecbxxvecc)=70`, then x is equal to

A

5

B

7

C

26

D

10

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If veca=-3hati-hatj+5hatk , vecb=hati-2hatj+hatK , vecc=4hatj-5hatk , find veca.(vecbxxvecc) .

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FULL MARKS-SAMPLE PAPER 13-PART
  1. A root of the equation |(3-x,-6,3),(-6,3-x,3),(3,3,-6-x)|=0 is

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  2. If veca=hati+2hatj+2hatk,|vecb| =5 and the angle between veca and vecb...

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  3. If veca=hati+hatj+hatk,vecb=2hati+xhatj+hatk,vecc=hati-hatj+4hatk and ...

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  4. If lim(xto0)(sin3x)/(tankx)=5 then the value of k is

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  5. Find Rf(0) for f(x)=|x| is

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  6. int tan^(-1) sqrt((1 - cos 2x)/( 1 + cos 2 x )) dx is

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  7. int(1)/(sqrt(3+4x))dx=

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  8. Two items are chosen from a lot containing twelve items of which four ...

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  9. If n(A)=10 and n(AcapB)=3, find n((AcapB)'capA).

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  10. Are there two distinct irrational numbers such that their difference i...

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  11. Find the value of tan 105^(@).

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  12. Write the first 6 terms of the sequence whose n^(th) term is given by ...

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  13. Show that the points (0,-(3)/(2)),(1,-1) and (2,-(1)/(2)) are collinea...

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  14. Find x and y if ((3x+4y,x-2y),(5,-3))=((2,4),(5,-3)).

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  15. Given veca=2hati+2hatj+3hatk, vecb=-hati+2hatj+hatk and vecc=3hati+hat...

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  16. Find the relation between a and b if lim(xto3)f(x) exists where f(x)={...

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  17. Find the derivative of t^(3) cos t with respect to t.

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  18. There are 15 candidates for an examination. 7 candidates are appearing...

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  19. Find the largest possible domain for the real valued function f define...

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  20. Resolve into partial fractions (3x+7)/(x^(2)-3x+2).

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