“函数的”造句
正割
函数的倒数,称为余割函数。
The value of the complement of the secant is called the cosecant.
二元
函数的列表法是不方便的, 然而是可能的.
A tabulation of a function of two variables is cumbersome, but possible.
母函数是研究用递推关系来确定的
函数的最理想工具.
Generating functions are an ideal tool for studying sequences defined by recurrence.