Try this: y1=x^2*(x<0) + (x+1)*(x>=1) or for f(x)=2x^2+x , x<4 and 10<x y2={x<4 , 10<x} (2x^2+x) On Fri, 14 Nov 1997, Jeff wrote: >Subject: piecewise graphs > >is there a way to graph piecewise functions on the TI-85? >piecewise as in: > >f(x) = { x^2, x<0 > x+1, x>=1 >and so on...