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If A is square matric and A^2=A,(I+A)^3-...

If A is square matric and `A^2=A,(I+A)^3-7A` will be

A

A

B

I-A

C

I

D

3A

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UNITED BOOK HOUSE-SET 7-EXERCISE
  1. Let A={1,2,3}. Then show that the number of relations containing (1,2)...

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  2. State which of the following is the value of (cos^(-1) (1/2)+2sin^(-1)...

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  3. If A is square matric and A^2=A,(I+A)^3-7A will be

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  4. The function f(x) = |x+1|

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  5. The value of overset(a)underset(-a)int (xe^(x^4))/(1+x^2)dxis

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  6. The approximate error in measuring the area of a square of side 10 cm ...

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  7. If vecalpha= 2hati+3 hat j-6 hatk and vec beta= phat i-hatj+2 hatk are...

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  8. Angle between the straight lines (x-5)/7=(y+2)/-5=z/1 and x/1=y/2=z/3 ...

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  9. IF P(AnnB) = 5/13 then the value of P(A^CuuB^C) is

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  10. The probability fuction of a random variable is always

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  11. Prove that the operation * an Z defined by a*b = a|b| for all a,b in Z...

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  12. Prove that , tan^(-1)(cotx)+cot^(-1) (tan x) = pi-2x

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  13. Show that |[cos 15^@ sin 15^@],[sin 75^@ cos 75^@]| =0

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  14. If A = ([3,5],[2,a]),B=([4,b],[2,9]) and C = ([26,a],[14,45]) find a a...

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  15. Prove that underset(x rarr 0)lim (log(1+x)+sinx)/(e^x-1) =2

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  16. If y = log{sinsqrt(x^2+1)} find (dy)/(dx)

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  17. Evaluate: int(e^(x loga)+e^(a log x)) dx

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  18. Write the order and degree of the differential equation ((d^2y)/(dx^2)...

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  19. Divide 24 into two parts such that their product is maximum.

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  20. If f(x) = 3x^2+15x+5, then find the approximate value of f(3.02), usin...

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