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## 2D implicit curve

• plotimplicit(f(x,y),x,y) draws the graphic representation of the curve defined by the implicit equation f (x, y) = 0 when x (resp y) is in WX-, WX+ (resp in WY-, WY+) defined by cfg,

• plotimplicit(f(x,y),x=0..1,y=-1..1) draws the graphic representation of the curve defined by the implicit equation f (x, y) = 0 when 0 x 1 and -1 y 1
It is possible to add two arguments to specify the discretisation steps for x and y with xstep=... and ystep=....
Input :
plotimplicit(x^2+y^2-1,x,y)
Or :
plotimplicit(x^2+y^2-1,x,y,unfactored)
Output :
The unit circle
Input :
plotimplicit(x^2+y^2-1,x,y,xstep=0.2,ystep=0.3)
Or :
plotimplicit(x^2+y^2-1,[x,y],xstep=0.2,ystep=0.3)
Or :
plotimplicit(x^2+y^2-1,[x,y], xstep=0.2,ystep=0.3,unfactored)
Output :
The unit circle
Input :
plotimplicit(x^2+y^2-1,x=-2..2,y=-2..2, xstep=0.2,ystep=0.3)
Output :
The unit circle

giac documentation written by Renée De Graeve and Bernard Parisse