level 4
13826404
楼主
目标：给定us00Origin，想要的到对应的几阶导数并且按照导数阶次命名，例如us01=D[us00Origin, {\[Eta], 0}, {\[Theta], 1}]；us10=D[us00Origin, {\[Eta], 1}, {\[Theta], 0}]
简单粗暴想到了如下代码，但是报错，运行不了，提示Set::write: Tag Symbol in Symbol[us00] is Protected.
要怎么解决呢，请各位大佬指教！
us00Origin = a \[Eta] \[Theta];
Do[Symbol["us" <> ToString[i] <> ToString[j]] =
D[us00Origin, {\[Eta], i}, {\[Theta], j}], {i, 0, 2, 1}, {j, 0, 2,1}]
2022年01月07日 04点01分
1
简单粗暴想到了如下代码，但是报错，运行不了，提示Set::write: Tag Symbol in Symbol[us00] is Protected.
要怎么解决呢，请各位大佬指教！
us00Origin = a \[Eta] \[Theta];
Do[Symbol["us" <> ToString[i] <> ToString[j]] =
D[us00Origin, {\[Eta], i}, {\[Theta], j}], {i, 0, 2, 1}, {j, 0, 2,1}]
