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If 2X+[(1,2),(3,4)]=[(3,8),(7,2)], then ...

If `2X+[(1,2),(3,4)]=[(3,8),(7,2)]`, then the matrix X is equal to -

A

`[(2,6),(4,-2)]`

B

`[(1,-3),(2,-1)]`

C

`[(1,3),(2,-1)]`

D

`[(2,-6),(4,-2)]`

Text Solution

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The correct Answer is:
C
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CHHAYA PUBLICATION-MCQ ZONE -Question Paper 6
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  2. If [(a(11),a(12),a(13)),(a(21),a(22),a(23)),(a(31),a(32),a(33))]=[(1,2...

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  3. If 2X+[(1,2),(3,4)]=[(3,8),(7,2)], then the matrix X is equal to -

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  15. The angle between the pair of lines (x-2)/(1)=(y+3)/(-2)=(z-4)/(2) a...

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  16. The cartesian equation of a straight line is (x-3)/(4)=(y+2)/(5)=(z-...

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  17. Three vectors veca, vecb, vec c are such that |veca|=3, |vecb|=2, |ve...

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  18. The value of hati*(hatk xx hatj) + hatj*(hati xx hatk)+hatk*(hatj xx h...

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  19. The angle between the planes x-2y+2z=5 and 2x-3y+6z=11 is -

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