This paper studies derivatives ofhigherorder about product of three functions, and obtains a group dependent derivative formulas.
研究了三个函数乘积的高阶导数,得到了一组相应的导数公式。
2
This paper discusses another way, which is rewritten as product of a few contravariant vectors and covariant vectors, to define higherorder tensors covariant derivative through transformations.
This paper is to discuss the higher-orderderivativeof many-variables abstract composite function, and to put forward the easy method to this type of questions through substitution.