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x and y are two + ve numbers sucbs that ...

x and y are two + ve numbers sucbs that xy=1 Then the minimum value of x+y is

A

2

B

`sqrt(2)`

C

3

D

`sqrt(3)`

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The correct Answer is:
A
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DIPTI PUBLICATION ( AP EAMET)-APPLICATIONS OF DIFFERENTIATION-EXERCISE 1E (MAXIMA AND MINIMA)
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  4. If x,y = 12 then the minimum value of x^2+y^2 is

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  7. The absolute minimum of y= c cosh (x/c) is

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  8. If a gt b, maximum value of a sin ^2x + b cos ^2 x is

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  14. If f(x) =x-k/x has a maximum value at x=-2 , then k=

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  18. If x is real, then the minimum value of y=(x^(2)-x+1)/(x^(2)+x+1) is

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  19. if x is real , the maximum value of (3x^2+9x+17)/(3x^2+9x+7) is

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  20. If x,y are strictly positive such that x+y=1 then the minimum value of...

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