<![CDATA[plot level set of the crescent function]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function
Sat, 09 Nov 2019 14:40:07 +0000Fri, 08 Nov 2019 14:09:50 +0000Zend_Feed<![CDATA[max(f,g) is not possible. use (f+g+abs(f-g))/2 your equation is only a parabol and two points. try another min(f,g) is (f+g-abs(f-g))/2 ]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270692
Fri, 08 Nov 2019 21:15:44 +0000<![CDATA[tOh yes, thats true. I did not care of this one, it was just one of the a try and go. Nevertheless, this enhancement would be nice. Actually it is not a parabol, whats this one? did you mean a parabolid? This one surface with 2 dimensions? It looks almost like a crescent, when I plot this with GeoGebra.]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270694
Fri, 08 Nov 2019 21:42:30 +0000<![CDATA[It's not clear what you mean I think. Maybe you can post a picture of what you are trying to plot?]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270696
Fri, 08 Nov 2019 21:48:09 +0000<![CDATA[I want to visualize the set L := {(x,y) in R^2 | max(x^2+(y-1)^2+y-1, -x^2-(y-1)^2+y+1)=1 }. As mathmagic noticed, max(f,g) is equal to (f+g+abs(f-g))/2. So I put this in GeoGebra (see the file), and got sth. that looks (to me) nearly like a crescent. My aim was not to find a formula to plot a crescent, but to visualize this set.]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270700
Fri, 08 Nov 2019 22:04:26 +0000<![CDATA[So I just wanted to say, that if you put max(x^2+(y-1)^2+y-1, -x^2-(y-1)^2+y+1)=1 in GeoGebra, it would be nice, if you get not an error, but the same plot I posted in the picture before.]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270702
Fri, 08 Nov 2019 22:08:43 +0000<![CDATA[it is enough with x² + (y - 1)² < 5 ∧ x² + (y - 3)² > 5 then line thickness to 0 ? your graph is not a function because the point over some values of x are not unique ]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270706
Sat, 09 Nov 2019 05:29:45 +0000<![CDATA[oh yes, it is not a function but a level set of a function. As i said, my aim was not to find a formula to plot a crescent, but to visualize this level set. Actually this function is called crescent function. I just wanted to visualize a problem from my optimization homework, e.g. with GeoGebra.]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270710
Sat, 09 Nov 2019 08:40:09 +0000<![CDATA[But this was not my intention for this topic. This should be just a "feature request".]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270712
Sat, 09 Nov 2019 08:59:17 +0000<![CDATA[entonces tú querías decir curvas en ecuaciones implicitas a partir de la funcion maximo de dos funciones]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270724
Sat, 09 Nov 2019 13:19:33 +0000<![CDATA["entonces tú querías decir curvas en ecuaciones implicitas a partir de la funcion maximo de dos funciones" Yes, exactly, thank you for the file, it looks amazing! But really I wanted just say, that it would be nice, if you could just write an equation like `max((x^2+(y-1)^2+y-1, -x^2-(y-1)^2+y+1))=1` and get a plot. It would be better readable, imho.]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270726
Sat, 09 Nov 2019 13:27:05 +0000<![CDATA[Oh but actually it should be `c(x,y)=(a(x, y) + b(x, y) + abs(a(x, y) - b(x, y))) * 0.5`, right?]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270728
Sat, 09 Nov 2019 13:40:05 +0000<![CDATA[(a+b+abs(a-b))/2 is enough]]>
https://help.geogebra.org/topic/plot-level-set-of-the-crescent-function#comment-270734
Sat, 09 Nov 2019 14:40:07 +0000