Then actually there are ways you can use basically differentials and constrained partials to figure out what the tangent vector to the curve is and so on.

然后，可以用微分关系,或受约束的偏微分来表示,曲线的切向量，就是这样了。

youdao

Then actually there are ways you can use basically differentials and constrained partials to figure out what the tangent vector to the curve is and so on.

然后，可以用微分关系,或受约束的偏微分来表示,曲线的切向量，就是这样了。

youdao