# Category : Science and Education

Archive : UCALC28.ZIP

Filename : PLOTDEMO

; Please remember to register.

prec 4 ; Many graphs do not require high precision for visual accuracy.

gcolor 8 ; GCOLOR sets the background color.

plot

y=sin(x) ; Try the different menu options,

y=2sin(x) ; and then press [Esc] to move on to the next screen.

y=3sin(x)

y=4sin(x)

plot y=x*sin(x)-2

grid 7

plot y=x*sin(x)-2, 1 to 5 ; Same equation, but within an interval

grid 0 ; grid is turned off

prec 10 ; precision is reset to default

plot r=t/pi, 0 to 5pi ; Polar equation

plot x=cos(t)-cos(2t), y=sin(t)-sin(2t), 0 to 2pi ; Parametric equation

plot 3*sin(t), t, -7.5 to 7.5 ; Another parametric equation

window(0,10,0,8) ; (0,0) is now on the bottom left of the screen

plot x^sin(x)

window(-10,10,-7.5,7.5) ; Back to the default window setting

plot ; Plot by itself prompts for multiple equations

line(-6,-5,-1,4)

y=sin(x)

y=2sin(x)

r=2cos(3t)

x=2cos(t), y=2sin(t)

rect(5,3,7,7)

fill(6,4)

plot"graph1.dat" ; Plots the data from another file

plot

sin(x)

rect(-9,-5,-4,-2)

"graph2.dat"

exit

Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/