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Tikz picture of two mathematical functions


Remove asymptote of a functionPgfplots : can't plot some usual mathematical functionsHow can I create new commands in TikZ?Mathematical symbols as keywords in listingSpan TikZ Picture Across Two ColumnsWolfram Mathematica Functions in LyxPGF Contour Plot with complicated (nested) functionspgfplots wrongly calculate pgfplots@data@xmin in the case of mixed plots (with and without error bar)Tikz picture: Volume between two surfacesFill between two functionsTikz picture using two “foreach” loops













1















I'm trying to draw the functions y=(0.05*0.4+0.1*2*x)/(0.05+0.1*2) and x=-0.1/(2*10*(y - 0.1))+y, by using tikz as follows



begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$, ylabel=$s$]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture


I obtained the picture:



enter image description here



But I'm not sure about the result (tikz seems to have drawn also the asymptote of second function). For me (and Mathematica) the result should be instead the following:



enter image description here



Can anybody tell me what's wrong with this picture and my tikz code?










share|improve this question

















  • 1





    Add appropriate curly brackets: addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2)); addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);.

    – marmot
    6 hours ago















1















I'm trying to draw the functions y=(0.05*0.4+0.1*2*x)/(0.05+0.1*2) and x=-0.1/(2*10*(y - 0.1))+y, by using tikz as follows



begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$, ylabel=$s$]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture


I obtained the picture:



enter image description here



But I'm not sure about the result (tikz seems to have drawn also the asymptote of second function). For me (and Mathematica) the result should be instead the following:



enter image description here



Can anybody tell me what's wrong with this picture and my tikz code?










share|improve this question

















  • 1





    Add appropriate curly brackets: addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2)); addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);.

    – marmot
    6 hours ago













1












1








1


0






I'm trying to draw the functions y=(0.05*0.4+0.1*2*x)/(0.05+0.1*2) and x=-0.1/(2*10*(y - 0.1))+y, by using tikz as follows



begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$, ylabel=$s$]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture


I obtained the picture:



enter image description here



But I'm not sure about the result (tikz seems to have drawn also the asymptote of second function). For me (and Mathematica) the result should be instead the following:



enter image description here



Can anybody tell me what's wrong with this picture and my tikz code?










share|improve this question














I'm trying to draw the functions y=(0.05*0.4+0.1*2*x)/(0.05+0.1*2) and x=-0.1/(2*10*(y - 0.1))+y, by using tikz as follows



begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$, ylabel=$s$]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture


I obtained the picture:



enter image description here



But I'm not sure about the result (tikz seems to have drawn also the asymptote of second function). For me (and Mathematica) the result should be instead the following:



enter image description here



Can anybody tell me what's wrong with this picture and my tikz code?







tikz-pgf wolfram-mathematica






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked 6 hours ago









MarkMark

20216




20216







  • 1





    Add appropriate curly brackets: addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2)); addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);.

    – marmot
    6 hours ago












  • 1





    Add appropriate curly brackets: addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2)); addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);.

    – marmot
    6 hours ago







1




1





Add appropriate curly brackets: addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2)); addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);.

– marmot
6 hours ago





Add appropriate curly brackets: addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2)); addplot[red, ultra thick] (-0.1/(2*10*(x - 0.1))+x,x);.

– marmot
6 hours ago










1 Answer
1






active

oldest

votes


















6














The TikZ/pgfplots parser gets confused about the brackets, it does not know which of them are delimiters of coordinates or expressions in the functions. So you have to help them a bit by adding curly brackets.



documentclass[tikz,border=3.14mm]standalone
usepackagepgfplots
pgfplotssetcompat=1.16
begindocument
begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$,
ylabel=$s$,unbounded coords=discard]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick,domain=0:0.099] (-0.1/(2*10*(x - 0.1))+x,x);
addplot[red, ultra thick,domain=0.11:1] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture
enddocument


enter image description here






share|improve this answer

























  • Thank you! It's clear. Is there a way to remove the asymptote?

    – Mark
    4 hours ago











  • @Mark Sure. (Sorry, was offline.) I removed the red asymptote. If you want to remove the blue one as well, remove addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));. The red one was because you plotted over a singularity at x=0.1, and one easy way to remove it is to add two separate plots that avoid it.

    – marmot
    2 hours ago










Your Answer








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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









6














The TikZ/pgfplots parser gets confused about the brackets, it does not know which of them are delimiters of coordinates or expressions in the functions. So you have to help them a bit by adding curly brackets.



documentclass[tikz,border=3.14mm]standalone
usepackagepgfplots
pgfplotssetcompat=1.16
begindocument
begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$,
ylabel=$s$,unbounded coords=discard]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick,domain=0:0.099] (-0.1/(2*10*(x - 0.1))+x,x);
addplot[red, ultra thick,domain=0.11:1] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture
enddocument


enter image description here






share|improve this answer

























  • Thank you! It's clear. Is there a way to remove the asymptote?

    – Mark
    4 hours ago











  • @Mark Sure. (Sorry, was offline.) I removed the red asymptote. If you want to remove the blue one as well, remove addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));. The red one was because you plotted over a singularity at x=0.1, and one easy way to remove it is to add two separate plots that avoid it.

    – marmot
    2 hours ago















6














The TikZ/pgfplots parser gets confused about the brackets, it does not know which of them are delimiters of coordinates or expressions in the functions. So you have to help them a bit by adding curly brackets.



documentclass[tikz,border=3.14mm]standalone
usepackagepgfplots
pgfplotssetcompat=1.16
begindocument
begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$,
ylabel=$s$,unbounded coords=discard]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick,domain=0:0.099] (-0.1/(2*10*(x - 0.1))+x,x);
addplot[red, ultra thick,domain=0.11:1] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture
enddocument


enter image description here






share|improve this answer

























  • Thank you! It's clear. Is there a way to remove the asymptote?

    – Mark
    4 hours ago











  • @Mark Sure. (Sorry, was offline.) I removed the red asymptote. If you want to remove the blue one as well, remove addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));. The red one was because you plotted over a singularity at x=0.1, and one easy way to remove it is to add two separate plots that avoid it.

    – marmot
    2 hours ago













6












6








6







The TikZ/pgfplots parser gets confused about the brackets, it does not know which of them are delimiters of coordinates or expressions in the functions. So you have to help them a bit by adding curly brackets.



documentclass[tikz,border=3.14mm]standalone
usepackagepgfplots
pgfplotssetcompat=1.16
begindocument
begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$,
ylabel=$s$,unbounded coords=discard]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick,domain=0:0.099] (-0.1/(2*10*(x - 0.1))+x,x);
addplot[red, ultra thick,domain=0.11:1] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture
enddocument


enter image description here






share|improve this answer















The TikZ/pgfplots parser gets confused about the brackets, it does not know which of them are delimiters of coordinates or expressions in the functions. So you have to help them a bit by adding curly brackets.



documentclass[tikz,border=3.14mm]standalone
usepackagepgfplots
pgfplotssetcompat=1.16
begindocument
begintikzpicture
beginaxis[xmin=0,xmax=1,ymin=0,ymax=1, samples=1000, xlabel=$c$,
ylabel=$s$,unbounded coords=discard]
addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));
addplot[red, ultra thick,domain=0:0.099] (-0.1/(2*10*(x - 0.1))+x,x);
addplot[red, ultra thick,domain=0.11:1] (-0.1/(2*10*(x - 0.1))+x,x);
endaxis
endtikzpicture
enddocument


enter image description here







share|improve this answer














share|improve this answer



share|improve this answer








edited 2 hours ago

























answered 6 hours ago









marmotmarmot

109k5133252




109k5133252












  • Thank you! It's clear. Is there a way to remove the asymptote?

    – Mark
    4 hours ago











  • @Mark Sure. (Sorry, was offline.) I removed the red asymptote. If you want to remove the blue one as well, remove addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));. The red one was because you plotted over a singularity at x=0.1, and one easy way to remove it is to add two separate plots that avoid it.

    – marmot
    2 hours ago

















  • Thank you! It's clear. Is there a way to remove the asymptote?

    – Mark
    4 hours ago











  • @Mark Sure. (Sorry, was offline.) I removed the red asymptote. If you want to remove the blue one as well, remove addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));. The red one was because you plotted over a singularity at x=0.1, and one easy way to remove it is to add two separate plots that avoid it.

    – marmot
    2 hours ago
















Thank you! It's clear. Is there a way to remove the asymptote?

– Mark
4 hours ago





Thank you! It's clear. Is there a way to remove the asymptote?

– Mark
4 hours ago













@Mark Sure. (Sorry, was offline.) I removed the red asymptote. If you want to remove the blue one as well, remove addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));. The red one was because you plotted over a singularity at x=0.1, and one easy way to remove it is to add two separate plots that avoid it.

– marmot
2 hours ago





@Mark Sure. (Sorry, was offline.) I removed the red asymptote. If you want to remove the blue one as well, remove addplot[blue, ultra thick] (x,(0.05*0.4+0.1*2*x)/(0.05+0.1*2));. The red one was because you plotted over a singularity at x=0.1, and one easy way to remove it is to add two separate plots that avoid it.

– marmot
2 hours ago

















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