parametrizacija

xuv[u_, v_] := u ; yuv[u_, v_] := v ; zuv[u_, v_] := -Cosh[u * v] ; u0 = -1 ; u1 = 1 ; RowBox[{RowBox[{du, =, 0.05}], ;}] v0 = -1 ; v1 = 1 ; RowBox[{RowBox[{dv, =, 0.05}], ;}]

Created by Mathematica  (May 4, 2004)