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If then sum of two positive numbers in c...

If then sum of two positive numbers in constant then show that their product is maximum when they are equal.

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The correct Answer is:
`x = c//2, (d^(2)y)/(dx^(2)) = -2 lt 0`
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ARIHANT PUBLICATION-APPLICATION OF DERIVATIVES -ODISHA BUREAU.S TEXTBOOK SOLUTIONS (EXERCISE 8 (D))
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  3. Show that x/(1+ x tan x,) x in (0,pi/2)is maximum when x = cos x.

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  4. Determine the absolute maximum and absolute minimum of the following f...

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  5. Find extreme value of f(x).={{:((x)/(1-x^2),-1ltxlt0),(x^3-x,0lexlt2):...

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  6. Find two numbers x and y whose sum is 15 such that xy^2 is maximum.

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  7. If then sum of two positive numbers in constant then show that their p...

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  8. Determine a rectangle of area 25sq. Units which has minimum perimeter.

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  15. Find the points on the curve y = x^2+1 which are nearest to the point ...

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  16. Show that the minimum distance of a point on the curve (a^(2))/(x^(2))...

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  17. Show that the vertical angle of a right circular cone of minimum curve...

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  18. Show that the semi-vertical angle of a right circular cone of minimum ...

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  19. Show that the shrtest distance of the point (0, 8a) from the curve ax^...

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