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If A=diag [2,-1,3[andB=diag [3,0,-1] , t...

If A=diag [2,-1,3[andB=diag [3,0,-1] , then find 4A+2B.

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The correct Answer is:
`4A+2B="diag"[14,-4,10]`
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ARIHANT PUBLICATION-MATRICES -QUESTIONS FPR PRACTICE (Part I Matrix and Its Types ) Very Short Answer Type Questions
  1. Write the order of the following matrices [-1]

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  2. In the matrix A=[{:(a,1,x),(2,sqrt(3),x^(2)-y),(0,5,-2//5):}] Write ...

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  3. In the matrix A=[{:(a,1,x),(2,sqrt(3),x^(2)-y),(0,5,-2//5):}] Write ...

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  4. In the matrix A=[{:(a,1,x),(2,sqrt(3),x^(2)-y),(0,5,-2//5):}] Write ...

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  5. If a matrix has 24 elements , then what are the possible orders it ca...

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  6. Find the number of all possible matrices of order 3xx3 with each of ...

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  7. Write the elements a(23) of 3xx3 matrix A=[a(ij)], whose elements a...

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  8. Construct a matrix of order 2xx2 , whose elements are given by a(ij)...

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  9. [{:(xy,4),(z+6,x+y):}]=[{:(8,w),(0,6):}] then write the value of (x...

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  10. If [{:(a+4,3b),(8,-6):}]=[{:(2a+2,b+2),(8,a-8b):}] then write the val...

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  11. If [{:(2x+y,4x),(5x-7,4x):}]=[{:(7,7y-13),(y,x+6):}]then find the valu...

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  12. Find the values of x,y and z , if [{:(x+y,),(x+z,),(y+z,):}]=[{:(9,),(...

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  13. Simplify , costheta[{:(costheta,sintheta),(-sintheta,costheta):}]+sint...

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  14. If 2[{:(3,4),(5,x):}]+[{:(1,y),(0,1):}]=[{:(7,0),(10,5):}], then find ...

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  15. If A=diag [2,-1,3[andB=diag [3,0,-1] , then find 4A+2B.

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  16. If x[{:(2,),(3,):}]+y[{:(-1,),(1,):}]=[{:(10,),(5,):}], then write the...

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  17. If 2[{:(1,3),(0,x):}]+[{:(y,0),(1,2):}]=[{:(5,6),(1,8):}], then find t...

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  18. Find x,y,z and t, if 2[{:(x,z),(y,t):}]+3[{:(1,-1),(0,2):}]=3[{:(3,5)...

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  19. If 3A-B=[{:(5,0),(1,1):}] and B=[{:(4,3),(2,5):}] then find the matrix...

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  20. Write the matrix which when added to the matrix [{:(2,-3),(-4,7):}]gi...

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