2D implicit curve

### 6.10.1 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 discretization 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