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Consider f (x) = x ^(ln x), and g (x) = ...

Consider `f (x) = x ^(ln x), and g (x) = e ^(2) x.` Let `alpha and beta` be two values of x satisfying `f (x) = g(x)( alpha lt beta)`
If `h (x) = (f (x))/(g (x))` then `h'(alpha)` equals to:

A

e

B

`-e`

C

`3e`

D

`-3e`

Text Solution

Verified by Experts

The correct Answer is:
D
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VIKAS GUPTA (BLACK BOOK)-CONTINUITY, DIFFERENTIABILITY AND DIFFERENTIATION-EXERCISE (COMPREHENSION TYPE PROBLEMS)
  1. Let f (x)= {{:(x [x] , 0 le x lt 2),( (x-1), 2 le x le 3):} where [x]=...

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  2. Let f :R to R be a continous and differentiable function such that f (...

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  3. Let f :R to R be a continous and differentiable function such that f (...

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  4. Let f :R to R be a continous and differentiable function such that f (...

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  5. f(x)=(cos^2x)/(1+cosx+cos^2x) and g(x)=ktanx+(1-k)sinx-x, where k in R...

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  6. Let f (x) (cos ^(2) x)/(1+ cos +cos ^(2)x )and g (x) lamda tan x+1(1-l...

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  7. f (x) = lim (x to oo) (x ^(2) + 2 (x+1)^(2n))/((x+1) ^(2n+1) + x^(2) +...

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  8. f (x) = lim (x to oo) (x ^(2) + 2 (x+1)^(2n))/((x+1) ^(2n+1) + x^(2) +...

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  9. f (x) = lim (x to oo) (x ^(2) + 2 (x+1)^(2n))/((x+1) ^(2n+1) + x^(2) +...

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  10. Let f and g be two differentiable functins such that: f (x)=g '(1) s...

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  11. Let f and g be two differentiable functins such that: f (x)=g '(1) s...

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  12. Let f and g be two differentiable functins such that: f (x)=g '(1) s...

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  13. Suppose a function f(x) satisfies the following conditions f (x+y) =...

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  14. Suppose a function f(x) satisfies the following conditions f (x+y) =...

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  15. Let f (x) be a polynomial satisfying lim (x to oo) (x ^(4) f (x))/( x ...

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  16. Let f (x) be a polynomial satisfying lim (x to oo) (x ^(4) f (x))/( x ...

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  17. Consider f (x) = x ^(ln x), and g (x) = e ^(2) x. Let alpha and beta b...

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  18. Consider f (x) = x ^(ln x), and g (x) = e ^(2) x. Let alpha and beta b...

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  19. Let f (n) x+ f (n) (y ) = (x ^(n)+y ^(n))/(x ^(n) y ^(n))AA x, y in R-...

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  20. Let f (n) x+ f (n) (y ) = (x ^(n)+y ^(n))/(x ^(n) y ^(n))AA x, y in R-...

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