Try x.^2.
On Tuesday, May 24, 2016 at 12:48:49 AM UTC+8, Henri Girard wrote: > > Hi, > I don't know why this plot doesn't work ? > It tells me the domain is wrong ? > I don't understand why ? > Any help ? > Regards > Henri > > > using Plots > x=linspace(-2,2) > f(x) = sqrt(4-x^2) > g(x) = -sqrt(4-x^2) > h(x) = sqrt(-x^2+2*x) > k(x) = -sqrt(-x^2-2*x) > plot([g,f,h,k],-2,2,aspect_ratio=1) >
