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If y = sqrt((secx-1)/(sec x +1) ) then (...

If `y = sqrt((secx-1)/(sec x +1) )` then `(dy)/(dx)`=

A

`1/(2)sec^2""x/2`

B

`sec^2""x/2`

C

`1/2 tan""x/2`

D

`tan""x/2`

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The correct Answer is:
A
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AAKASH SERIES-DIFFRENTATION-PRACTICE SHEET (EXERCISE - I) (LEVEL - I)(Straight Objective Type Questios)
  1. d/(dx)[cos^(-1)(xsqrtx-sqrt((1-x)(1-x^2)))] =

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  2. If x is measured in degree , then d/(dx) (cosx) is equal to

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  3. If y = sqrt((secx-1)/(sec x +1) ) then (dy)/(dx)=

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  4. If sqrt(1- x ^(2)) + sqrt(1- y ^(2) ) = a (x -y) then (dy)/(dx)=

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  5. If f(x) = |cos x - sin x| , then f^(1)(pi/4) =

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  6. If f^(1)(x)=sin(logx)andy=f((2x+3)/(3-2x)) then (dy)/(dx) is

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  7. The value of 3 f(x ) - 2 f(1/x)=x then f^(1)(2) =

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  8. If u = f(x^2) , v = g(x^3), f^(1)(x) = sinx , g^(1)(x) = cos x then fi...

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  9. If sqrt(u/v)+sqrt(v/u)=6 , then (du)/(dv) =

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  10. If x = theta -(1)/(theta) , y = theta + (1)/(theta) then (dy)/(dx) =

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  11. sqrt((y)/( x))+ sqrt((x)/(y))= 2 implies (dy)/(dx) =

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  12. If f(x) = (ax + b) Cos x +(cx +d) Sin x and f^(1) (x) = x Cosx is an a...

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  13. If f(1) = 3 ,f'(1)=-1/3 , then the derivative of {x^(11) +f(x)}^(-2) a...

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  14. Let f(x+y)=f(x)f(y) and f(x) = 1 + (sin2x) g(x) where g(x) is continu...

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  15. If y = f((3x+4)/(5x+6)) and f^(1)(x) = tanx^2 then (dy)/(dx) is equal...

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  16. If y =a sin x + b cos x , then y^2 + ((dy)/(dx))^2 is a

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  17. Let h(x) be differentiable for all x and let f(x) = (kx+e^(x)),h(x) wh...

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  18. d/(dx){Tan^(-1)((asinx + b cosx)/(acosx-bsinx))} =

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  19. d/(dx)[tanh^(-1)((2x)/(1+x^2))]=

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  20. If g is the inverse of f and f'(x) = 1/(2+x^n) , then g^(1)(x) is equa...

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