2018-09-26から1日間の記事一覧
Problem 4-4 Show $$ \def\ppdiff#1#2{\frac{\partial #1}{\partial #2}} \def\pdiff#1{\frac{\partial}{\partial #1}} \def\mb#1{\mathbf{#1}} \def\reverse#1{\frac{1}{#1}} \def\mfrac#1#2{\frac{\,#1\,}{\,#2\,}} \def\Bpdiff#1{\frac{\partial^{2}}{\pa…