Seeburger-Calculus3-ClassifyingCritPts-Fig1 Last updated Nov 11, 2023 Save as PDF Seeburger-Calculus3-13.7-2nd-Degree Taylor Polynomial with Surface Example 1B Seeburger-Calculus3-ClassifyingCritPts-Fig2 Page ID13610 ( \newcommand{\kernel}{\mathrm{null}\,}\)