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I am seriously seriously stuck onto this problem!!!! I really need some help, i need to hand the whole thing by monday, the following question is the only part i am badly stuck on, please help!!!! I need to differentiate this:
(π² * r^6 + 4100625)² / r - (π² * r^6 + 36905625)² / 3r
Last edited by ryos (2005-12-04 07:42:54)
El que pega primero pega dos veces.
I think that you meant:
Last edited by irspow (2005-12-04 07:29:31)
Thanks ryos and irspow for spending time on my question ......Irspow, well the formula was originally for the volume and surface area of a cone, my shape was a truncated cone, but as i had too many variables in the formula i.e height, radius. I had to remove one of them and i did it by saying the short part of the cone is 1/3 of the whole cone......what i did next was re-arranged the formula for volume to take height, then i put the equation of height in surface area.
I didnt want to start a new topic on this but i am very confused about the following:
Last edited by johny (2005-12-05 00:58:54)
This relationship between radius, height, and side(slant height) can not exist, at least not in a cone. If your height and radius were 1/3 the side would be the square root of 2/9 or ≈.471
Last edited by irspow (2005-12-06 04:48:36)