list(list(list("x= - y","y=root_of(y_**4 + y_ - 1,y_,tag_2)"),
          list("x= - y","y=root_of(y_**3 + y_**2 - 1,y_,tag_1)")),
     list(list("x=2.21*i + 1.77","y= - 2.21*i + 1.77","z= -3.54"),
          list("x=0.58*i - 1.27","y= - 0.58*i - 1.27","z=2.54"),
          list("x= - 0.58*i - 1.27","y=0.58*i - 1.27","z=2.54"),
          list("x= - 2.21*i + 1.77","y=2.21*i + 1.77","z=-3.54")),
     list("y=arbconst(1)/e**(a*x)"),
     list(list("q=myfun1(p^2+1,exp(r))", " p=cos(r)", " r=m_y2f(a,b,c)"),
          list("q=myfun1(p^2+1,exp(-r))", " p=cos(-r)", " r=m_y2f(a,b,c,d+e,f)")))
