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If [2 3 5 7]\ [1-3-2 4]=[-4 6-9x], write...

If `[2 3 5 7]\ [1-3-2 4]=[-4 6-9x],` write the value of `x`

A

13

B

18

C

28

D

7

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The correct Answer is:
A
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EDUCART PUBLICATION-SAMPLE PAPER 4 -SECTION - B
  1. The graph of the inequality 4x + 6y le 24 is :

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  2. Let A = {1,2,3}, B {5,7,6} and f : A to B be defined as f = {(1,7), (...

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  3. If A = [{:(3,1),(5,2):}], then (A ^(T)) ^(-1) =

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  4. Richa went to an amusment park and was trilled to ride into a rollier ...

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  5. The equation of tangent to the curve y = x ^(2) + 6x-4 at x =2 is :

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  6. The function f (x) = 2x ^(3) + 9x ^(2) + 12 x + 20 is :

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  7. The value of cot ((pi)/(2) - 2 cot^(-1) sqrt3) is :

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  8. If [2 3 5 7]\ [1-3-2 4]=[-4 6-9x], write the value of x

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  9. Let R be the relation in the set N given by R = {(a,b):|a-b| is odd}. ...

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  10. The corner points of the feasible region, shown as shaded in the graph...

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  11. If B = [{:(-2, 2, 0),(3,1,4):}]; C= [{:(2,0,-2),(7,1,6):}]and 2 A - 3 ...

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  12. The derivative of sin ^(2) sqrtx with respect to x is :

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  13. If x^m . y^n = (x+y)^(m+n) then (dy)/(dx)is:

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  14. The equation of the tangent at (2,3) on the curve y^2=a x^3+b is y=4x-...

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  15. Evaluate |{:(1,2,3),(3,-1,1),(2,3,5):}|

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  16. The domain of tan ^(-1) x is :

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  17. The slope of tangent to the curve x =a sin ^(3) t , y = b cos ^(3)t &...

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  18. If y + sin y = cos x, then (dy)/(dx)   at &nbsp ((pi)/(2), (pi)/(2)) i...

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  19. If a matrix has 8 elements, then which of the following will not be a ...

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  20. The function f (t) = tan t -t :

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