Qualification > Math

Differentiation Question

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Tohru Kyo Sohma:

--- Quote from: Ari Ben Canaan on January 01, 2011, 01:02:31 pm ---Differentiate the equation. Set dy/dx = 0 and solve for x.

Determine if the stationary point is a minimum or maximum. Select the minimum point and plug it into the original equation.

This is the minimum cost.

--- End quote ---
sorry ari if ur getting fedup of me asking so much questions........but i got the answer.......thanks alot!! ;D

Dibss:

--- Quote from: mimiswift on January 01, 2011, 11:38:44 am ---thank you so much wispher
i got it now........... ;)

--- End quote ---

Glad to help. (:

elemis:

--- Quote from: mimiswift on January 01, 2011, 02:44:58 pm ---sorry ari if ur getting fedup of me asking so much questions........but i got the answer.......thanks alot!! ;D

--- End quote ---

No, I'm not fedup.

Tohru Kyo Sohma:

--- Quote from: Ari Ben Canaan on January 01, 2011, 04:08:53 pm ---No, I'm not fedup.



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cool
 8)

Tohru Kyo Sohma:
ok......so i hv yet another doubt;
a rectangle box with a lid is made from thin metal. its length is 2x cm and its width is x cm. if the box volume is 72 cm^3
a. show that the area of the metal used is equal to 4x^2 +216/x.
b. find the value of x so that the area A is minimum?

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