Förberedande kurs i matematik 1

Versionen från 20 mars 2008 kl. 06.53 (redigera) Tek (Diskussion | bidrag) ← Gå till föregående ändring		Nuvarande version (25 mars 2008 kl. 07.00) (redigera) (ogör) Tek (Diskussion | bidrag)
Rad 72:		Rad 72:
	dy := dx; % vertical distance between grid lines		dy := dx; % vertical distance between grid lines
-	Lx_lft := 6*dx+2pt; % Length of the left-hand part of the x-axis	+	Lx_lft := 4*dx+2pt; % Length of the left-hand part of the x-axis
-	Lx_rt := 6*dx+2pt; % Length of the right-hand part of the x-axis	+	Lx_rt := 4*dx+2pt; % Length of the right-hand part of the x-axis
-	Ly_lwr := 6*dy+4pt; % Length of the lower part of the y-axis	+	Ly_lwr := 4*dy+4pt; % Length of the lower part of the y-axis
-	Ly_upr := 6*dy+4pt; % Length of the upper part of the y-axis	+	Ly_upr := 4*dy+4pt; % Length of the upper part of the y-axis
	ahangle := 30; % Angle of the arrow tip		ahangle := 30; % Angle of the arrow tip
Rad 115:		Rad 115:
	vardef f(expr x) = 3*x-2 enddef;		vardef f(expr x) = 3*x-2 enddef;
	path p_line;		path p_line;
-	p_line := (-2*2dx,f(-2)*2dy)--(3*2dx,f(3)*2dy);	+	p_line := (-2*dx,f(-2)*dy)--(3*dx,f(3)*dy);
	s := xpart (p_line intersectiontimes ((-Lx_lft,-Ly_lwr)--(Lx_rt,-Ly_lwr)));		s := xpart (p_line intersectiontimes ((-Lx_lft,-Ly_lwr)--(Lx_rt,-Ly_lwr)));
	t := xpart (p_line intersectiontimes ((-Lx_lft,Ly_upr)--(Lx_rt,Ly_upr)));		t := xpart (p_line intersectiontimes ((-Lx_lft,Ly_upr)--(Lx_rt,Ly_upr)));
Rad 123:		Rad 123:
	linecap := rounded;		linecap := rounded;
	drawoptions();		drawoptions();
-
-	% Tick marks
-	pickup pencircle scaled 0.4pt;
-	for x=2dx step 2dx until infinity:
-	exitif x>Lx_rt-4pt;
-	draw (x,-1.5pt)--(x,1.5pt);
-	endfor
-	for x=-2dx step -2dx until -infinity:
-	exitif x<-Lx_lft+2pt;
-	draw (x,-1.5pt)--(x,1.5pt);
-	endfor
-	for y=2dy step 2dy until infinity:
-	exitif y>Ly_upr-6pt;
-	draw (-1.5pt,y)--(1.5pt,y);
-	endfor
-	for y=-2dy step -2dy until -infinity:
-	exitif y<-Ly_lwr+2pt;
-	draw (-1.5pt,y)--(1.5pt,y);
-	endfor
	% Rescale the image		% Rescale the image

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Nuvarande version

Detta är en figur som används i svaret till övning 2.2:7 och är ritad i språket Metapost. Du kan redigera bilden genom att klicka på redigera-fliken.