Applying One transformation after another is captured algebraically with matrix multiplication.

应用一个接一个的变换是用矩阵乘法代数捕获的。

In this video, I'm really just going to algebraically manipulate this expression so that it's ready for the calculus stage.

在本视频中，我真的只是要对这个表达式进行代数运算， 以便为微积分阶段做好准备。