linear combination

例句：

1. 1. In the study ofstatistics, linear combinations are used to modelrelationships between variables.
   在统计学研究中，线性组合被用来建模变量之间的关系。
2. 2. The linear combinationof these two numbers gives us a sumthat is exactly twice as large as eachnumber alone.
   这两个数的线性组合给我们一个和，正好是每个单独的数字的两倍大。
3. 3. The linear combination of thesetwo functions will give us a new functionthat has properties similar to both.
   这两个函数的线性组合将给我们一个新的函数，具有与两者相似的属性。