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Show 77 The second Yu*O either where maximum, this is there it case of type local be must the is curve in illustrated Y locally boundary edge but outside where of curve the at boundary edge, 2 it is passing the of edge 2n the below little and (uO,vO+dv) Yv=du=O and into 18 maximum, at Y=Yscan, (uO,vO-civ). the second - to the Yv=O constant u as in a u.. the curve boundary edge Dv is order Taylor Y(uo,vo) Maximum the 1 Yscan Edge Entering - intersects now In case ------------ Just it. 18. figure Figure strict a t2ngent Consider to not through parabolic, edge. tangent is Since YV:j=O. or level a maximum = 2 dv2 found by moves at two points substituting expansion yielding Yvv / dv If Yvv<O the exists. because Yvv expression under If it =±; /2(Yscan-Y(uo,vo)) was Yvv>O a then local the saddle the radical point point. would is positive have bgen and dv removed |
