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If A=|{:(8,0,0),(0,-1,0),(0,0,1):}| then...

If `A=|{:(8,0,0),(0,-1,0),(0,0,1):}|` then A is:

A

Scalar matrix

B

Diagonal matrix

C

Unit matrix

D

Row matrix

Text Solution

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The correct Answer is:
B
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PREMIERS PUBLISHERS-ALGEBRA-OTHER IMPORTANT OBJECTIVE TYPE QUESTIONS
  1. Find : (16a^(2)-2a-3)/(8a^(2)+11a+3) div (3a^(2)-2a-1)/(3a^(2)-11a-4)

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  2. If a polynomial p(x)=x^(2)-6x-7 is divided by g(x), we get (x-7)/(x+1)...

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  3. Simplify : (x^(2)+1)/(x^(2)+3x+2)-(x^(2)-x)/(x^(2)+3x+2)

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  4. Find the square root of: (144(a+b)^(8)(x-y)^(4))/(64(a-b)^(2)(x+y)^(6)...

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  5. Find the square root of (1+(2)/(x^(4))+(1)/(x^(8))) :

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  6. Find the zeros of x^(2)-6x-7 :

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  7. What is the quadratic equation fr which the sum and product of the roo...

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  8. Solve : sqrt(3)x^(2)+5x+2sqrt(3)=0

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  9. The condition put the equation x^(2)(p^(2)+q^(2))-2x(pr+qs)+(r^(2)+s^(...

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  10. If alpha and beta are roots of x^(2)+8x+10=0 then (alpha)/(beta)+(beta...

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  11. If A=|{:(8,0,0),(0,-1,0),(0,0,1):}| then A is:

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  12. If A is (m xx n) matrix then A^(T) will be a matrix of the type :

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  13. If |{:(1,2a+b),(0,3a-b):}|=|{:(1,5),(0,5):}| find a and b:

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  14. Find x and y if x[{:(4),(-2):}]+y[{:(2),(1):}]=[{:(10),(-6):}]

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  15. If A=[1" "-1" "2],B=[{:(-1,3),(4,3),(7,-1):}] then AB is :

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  16. (AB)^(T) is :

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  17. If A=[{:(cos theta, sin theta),(-sin theta, cos theta):}] then "A A"^(...

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  18. If A is (3xx4) matrix and B is (4xx3) matrix how many columns does AB ...

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  19. Find the odd man out :

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  20. Find the incorrect statement from the following :

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