in the calculation of defining and double integral, appropriately making use of the odevity of integrand and the symmetry of integral region can simplify the calculation of integral.
在定积分和重积分的计算中,恰当地利用被积函数的奇偶性和积分区域的对称性,可以使积分运算大大简化。
the patients were divided into experimental group and control group randomly according to the odevity of the last number of the id number, and each group has 20 cases.
所有病例按照其住院号末位数的奇偶数随机分为对照组及实验组,每组20例。
this paper studies the discrimination methods about odevity of function of complex variable, and obtains several necessary and sufficient conditions.