Find the largest rectangular parallelepiped (box) that can be shipped by parcel post (length plus girth = 108 in )?
i know F= l.h.w+ A(l+2h+2w)
and i found
df/dl=o , df/dh=0 , df/dw=0
how can i complete answer to find A ,(l) maxim , (h) maxim ,and (w) maxim
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The holonomic constraint function is reinforced in this guide.