Drawing Parabolic Curve

Hello group,
I have a request from a customer to draw a specific parabola curve
described as follows: Y=X squared / 4P. Where P = 6.
Anybody knows how to do that?
Thanks,
Jeannette
Reply to
Jeannette
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Dish antenna?
Bob
Reply to
<castlebravo242
select a value for x calculate y X=-1 P=6 Y=(x*x)/(4*P) Y=(-1*-1)/(4*6) Y=1/24
X=0 P=6 Y=(x*x)/(4*P) Y=(0*0)/(4*6) Y=0/24 Y=0
X=1 P=6 Y=(x*x)/(4*P) Y=(1*1)/(4*6) Y=1/24
X=2 P=6 Y=(x*x)/(4*P) Y=(2*2)/(4*6) Y=4/24
so the command is draw single point enter the location if x=1 then 1,1/24 if x=2 then 2,4/24 if x=3 then 3,9/24 etc. connect the dots with polyline arcs. the closer the dots to each other the more accurate the curve.
Bob
Reply to
<castlebravo242
or connect the dots with a spline
Reply to
strawberry
Hello,
There is a a little program (20 years old) to draw parabolic curves at
formatting link
- you can download the marvolisp.zip file, extract it into your AutoCAD's support directory and start the program with the command !(load "parabel.lsp") and then "parabel".
Martin
Reply to
Martin Vogel
There is also a program called Z-grapher (freeware) which will do any functional, parametric or polar graph, and can export to a rastered format by copying and pasting. For this, I use Irfanview. ________________________________________ Everyone is a little krazy, but I am the kynge of krazy
KrazyKyngeKorny (Krazy, not stupid) =AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF= =AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF=AF
Reply to
KrazyKyngeKorny

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