Last Updated：2022/12/24
Hence it appears that the Curve MD cannot approach the Axis AL, then in the point D, where it Interſects the perpendicular AK; and that afterwards when AC is leſs then AE, then the Portion of the Curve DO, will be deſcrib'd Convex towards the Axis AL, ſo that the Surface of the Solid of leaſt Reſiſtence may be Concave as well as Convex towards the Axis.
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Hence
it
appears
that
the
Curve
MD
cannot
approach
the
Axis
AL,
then
in
the
point
D,
where
it
Interſects
the
perpendicular
AK;
and
that
afterwards
when
AC
is
leſs
then
AE,
then
the
Portion
of
the
Curve
DO,
will
be
deſcrib'd
Convex
towards
the
Axis
AL,
ſo
that
the
Surface
of
the
Solid
of
leaſt
Reſiſtence
may
be
Concave
as
well
as
Convex
towards
the
Axis.
