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A positive integral power of the imagina...

A positive integral power of the imaginary quantity i is taken at random. The probability of the value being real is ___________.

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A DAS GUPTA-Miscellaneous Exercises-Exercise
  1. One diagonal of a square is the portion of the line 7x + 5y= 35 interc...

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  2. Let f(x) = 2sin^(2)beta + 4cos(x + beta)* sin x* sin beta + cos 2(x + ...

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  3. A positive integral power of the imaginary quantity i is taken at ran...

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  4. If z is a complex number such that zbarz = 1 and amp frac{z}{bar z}= ...

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  5. If 4 sin^(-1)x + cos^(-1)x=pi, then: x=

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  6. The solution set of f'(x)>g'(x) where f(x)=(1/2)5^(2x+1) and g(x)=5^x+...

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  7. lim(n to ∞) frac{a^n}{n!} is equal to .

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  8. The differential coefficient of 2^x w.r.t. x^2 is.

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  9. A natural number less than or equal to 200 is written down at random....

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  10. A box contains 100 tickets numbered 1, 2, 3, ... ,100. Two tickets ar...

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  11. Prove that two parabolas having the same focus and their axes in oppos...

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  12. If a, b, c and d are positive real numbers such that a+b+c+d= 1 then p...

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  13. A vertical lamp-post of height h stands at a point on the boundary of...

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  14. Find the equations of straight lines which pass through the intersecti...

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  15. The circle x^2+y^2=1 cuts the x-axis at Pa n dQdot Another circle with...

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  16. Solve - frac{sin^(3) frac{x}{2} -cos^(3) frac{x}{2}}{2 +sinx} = cosx/3

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  17. let f(x) be the polynomial function. It satisfies the equation 2 +f(x)...

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  18. Evaluate int(0)^(pi)(e^(cosx))/(e^(cosx)+e^(-cosx))dx.

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  19. Find the co-ordinates of all the points P on the ellipse, x^2/a^2+y^2/...

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  20. Find the equation of a curve passing through the point (1.1) if the pe...

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