stem on line AB in which A has coordinate 0 and
B has coordinate 1.
Forgive an old math teacher,
Kip Murray
On Friday, March 11, 2016, Donald Kelly wrote:
> We are trying to do the same thing- where you concentrate on a point-
> slope approach, I tend to a rotation of points -and there
We are trying to do the same thing- where you concentrate on a point- slope
approach, I tend to a rotation of points -and there can be many- points on a
shape or a curve. With this latest example I use the following.
rotheta=:([:r.[)*]
pts=:_1j0 0j1 1j2
ctr=:_1j1
] s=:ctr+ (1r4p1) rotheta
In my opinion, in most cses computer solutions are much esier using nodal
admittance methods
once you select a node as a reference then it is very easy to set up an
admittance matrix
yii is the sum of admittances connected to node i from all nodes including the
reference.
yij=yji =-sum of admitt
This is the resistance between adjacent nodes. Up to today I couldn't handle
non-adjacent nodes but have found what appears to be an elegant way to deal
with it.
This also assumes an infinite grid but would give good results for a grid which
is large compared to the distance between the nodes un
