All I did was, I did a little bit of calculus, a little bit of algebra, and then I drew the thing.

我只不过是稍微用了点微积分,做了点代数运算,然后就画出来了

耶鲁公开课 - 博弈论课程节选

All right, again this is straightforward kind of algebraic manipulations to get here.

好，必须再提一次这已经是,直截了当的代数运算了。

麻省理工公开课 - 计算机科学及编程导论课程节选

This is a matter of simple algebra, of taking this and putting it here.

本质上讲,这是简单的代数运算,把这个式子代入上面的式子

耶鲁公开课 - 基础物理课程节选