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If usin t + vcos t = 5 and ucos t - vsin...

If `usin t + vcos t = 5` and `ucos t - vsin t = 7` then `(ddotu)(dotv) - (dotu)(ddotv)` = _____ where dots denote differentiation w.r.t. t.

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A DAS GUPTA-Miscellaneous Exercises-Exercise
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  2. If usin t + vcos t = 5 and ucos t - vsin t = 7 then (ddotu)(dotv) - ...

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  3. If g is the inverse function of fa n df^(prime)(x)=sinx ,t h e ng^(pri...

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  4. Let f(x)=x+1 and phi(x)=x-2. Then the value of x satisfying |f(x)+phi(...

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  5. One diagonal of a square is the portion of the line 7x + 5y= 35 interc...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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