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- 100 rem -- 1/x integrated --
- 105 print""
- 110 print"output to screen or printer (s/p) s";:inputa$
- 115 if a$="s" then z=1.33:z1=0:z2=26.4:goto130:rem values for screen output
- 120 if a$<>"p" then110
- 125 z=1.208:z1=2.01:z2=38.24:rem values for printer output
- 130 screen 1:hue0,1
- 135 wipe
- 140 rem -- set up constants --
- 145 xt=z2:yt=100:rem sets coordinates
- 150 ys=0:xs=z2:rem start of divisions pn coordinates
- 155 ex=50*z:ey=50:rem expansion factors for x and y coordinates
- 160 rem -- calibrate x coordinates --
- 165 forx=xs to319 step5*z
- 170 y=yt:plotx,y:nextx
- 175 forx=xs to319 step10*z
- 180 fory=yt-1 to yt+1:plotx,y:nexty:nextx
- 185 forx=z2to319 step50*z
- 190 fory=yt-2 to yt+2:plotx,y:nexty:nextx
- 195 rem -- calibrate y coordinates --
- 200 for y=ysto199 step5
- 205 x=xt:plotx,y:nexty
- 210 for y=ys to 199 step 10
- 215 for x=xt-1 to xt+1:plotx,y:nextx:nexty
- 220 for y=ys to 199 step50
- 225 for x=xt-3 to xt+3:plotx,y:nextx:nexty
- 249 rem -- y=1/x graph & integrals of this --
- 250 for x=.6 to 4 step .01
- 260 y=1/x
- 270 x1=ex*x+xt:y1=ey*y+yt:plotx1,y1:nextx
- 280 for x=.3 to 4 step .01
- 290 y=log(x)
- 300 x1=ex*x+xt:y1=ey*y+yt:plotx1,y1:nextx
- 305 rem next is d[log(x)]/dx
- 310 for x=.01 to 4 step.01
- 320 y=x*(log(x)-1)
- 330 x1=ex*x+xt:y1=ey*y+yt:plotx1,y1:nextx
- 400 for y=-1.5 to 1.5 step.05
- 410 x=1
- 420 x1=ex*x+xt:y1=ey*y+yt:plotx1,y1:nexty
- 425 rem next is d[d[log(x)]/dx]/dx, the 2nd derivative of log(x)
- 430 for x=.1 to 4.3 step.02
- 440 y=((x^2*log(x))/2)-(3*x^2)/4
- 450 x1=ex*x+xt:y1=ey*y+yt:plotx1,y1:nextx
- 455 rem next is where x=e or 2.718..
- 460 for y=-1.5 to 1.5 step.05
- 470 x=exp(1)
- 480 x1=ex*x+xt:y1=ey*y+yt:plotx1,y1:nexty
- 999 rem -- screen or hardcopy --
- 1000 get a$:if a$="" then1000
- 1010 print "":screen 0:printchr$(14)
- 1020 print"hardcopy (y/n) n";:inputa$:ifa$="n" then1080
- 1030 ifa$<>"y"then1010
- 1040 print"single or double width (s/d) s";:inputa$
- 1050 ifa$="s" then poke2,1:goto1070
- 1060 poke2,2:ifa$<>"d"then1040
- 1070 screen 1:sys52224
- 1080 screen 0:printchr$(14):list
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- ready.
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