extraction of a root

A Z? Q iteration method on complex plane is introduced for the root extraction of higher order proper equation, the initial iterative value does not influence the convergence.

提出一种ZQ迭代算法，在复平面上迭代求解高阶特征方程的根，因而收敛性不受迭代初值的影响。

The extraction of a root of a quantity. We think this thread has broken off.

开方，求一个数的方根我们认为这根线断开了。

Extraction of sugar compounds from Gardenia jasminoides root with water as solvent showed that extracting temperature was a key factor.

采用水提法，对栀子根糖类化合物的提取结果表明：提取温度对糖类化合物的含量有极为显著的影响，其它条件影响较小。

On the Thought of Combine Number with Form from Algorithms on Extraction of a Root in Classic China

从中国古算的开方术看形数结合思想