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If the diagonals of a parallelogram are `3hati+hatj-2hatk` and `hati-3hatj+4hatk`, then the area of the parallelogram is -

A

`5sqrt(3)` square units

B

`10sqrt(3) ` square units

C

`(10)/(sqrt(3))` square units

D

`20sqrt(3)` square units

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The correct Answer is:
A
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CHHAYA PUBLICATION-MCQ ZONE -Question Paper 2
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  2. The points with position vectors 60hati+3hatj, 40hati-8hatj and a hat...

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  3. If the diagonals of a parallelogram are 3hati+hatj-2hatk and hati-3hat...

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  6. The relation R is defined on the set of natural numbers N as x is a f...

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  7. The value of sin((1)/(2)"cos"^(-1)(4)/(5)) is -

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  8. Let C and R be the sets of complex numbers and real numbers respectiv...

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  9. Let X be the random variable of the number of points obtained in singl...

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  10. If n and p are two parameters of a binomial distribution, state which ...

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  11. The domain of definition of the function sin^(-1)[log(3)((x)/(3))] is ...

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  12. The value of cot((pi)/(4)-2cot^(-1)3) is -

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  13. If y=sqrt(sin sqrt(x)), then the value of (dy)/(dx) is -

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  14. If f(x)=cos^(-1)[(1-(logx)^(2))/(1+(logx)^(2))], then the value of f'...

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  15. If y=a cos m x-b sin m x, then the value of (d^(2)y)/(dx^(2)) is -

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  16. If y=x^(e^(x)), then the value of (dy)/(dx) is -

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  17. If 2^(x)+2^(y)=2^(x+y), then the value of (dy)/(dx) at x=y=1 is -

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  18. If f(x)=x(x-1)(x-2), 0 le x le 4, then the point x=c which satisfies m...

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  19. Let f(x)=x|x|. Then the set of points where f(x) is twice differentiab...

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  20. If x=sin^(-1) t, y=log(1-t^(2)), 0 le t lt 1, then the value of (d^(2...

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