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If A is a square matrix, then A+A' is...

If A is a square matrix, then `A+A'` is

A

unit matrix

B

null matrix

C

A

D

symmetric matrix.

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UNITED BOOK HOUSE-SET 3-EXERCISE
  1. cos^(-1)(1/2)+2sin^(-1)(1/2) is equal to

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  2. If A is a square matrix, then A+A' is

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  3. If f(x) = logx, then d/(dx)f(logx) =

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  4. If f(2a-x)=-f(x), then overset(2a)underset(0)intf(x)dx =

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  5. If a particle moves along the parabola y^2= 8x then the co-ordinates o...

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  6. i.(jxxk)+j.(ixxk)+k.(ixxj)=

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  7. P(A) = 0.6,P(B) = 0.3,P(B//A) = 0.2m P(AuuB)=

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  8. The mean and standard deviationg of a binomial distribution B(n,p) ar...

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  9. Prove that the binary operation o defined by a o b = |a|+|b|, AA a,b...

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  10. Solve: sin^(-1)x-cos^(-1)x = pi/6

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  11. If A= [[0,2],[3,-4]],kA = [[0,3a],[2b,24]] then find the value of k+a+...

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  12. Without expanding show that |[1/a,1,bc],[1/b,1,ca],[1/c,1,ab]|=0

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  13. Show that , d/(dx)[x/2sqrt(a^2-x^2)+a^2/2 sin^(-1)x/a]=sqrt(a^2-x^2)

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  14. Evaluate the following integral: int (tan^-1)sqrt((1-sinx)/(1+sinx)...

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  15. Find the value of C that occurs in the conclusion of largranges's MVT ...

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  16. Solve the following differential equations: dy/dx=e^(x+y)+x^2 e^y

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  17. If |veca+vecb|= |veca-vecb| ,(where veca and vec b are any vector) the...

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  18. The cartesian equations of a line are x= ay+b,z= cy+d . Find its direc...

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  19. Events A and B are such that P(A) =(1)/(2), P(B) =(7)/(12) and "P(not ...

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  20. A binomial distribution B(n,p) has the mean 8 and variance 8/3. Find ...

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