The definition of work suggests a third process of vectoralgebra, namely, scalar multiplication of two vectors.
功的定义用到矢量代数的第三种运算，即两个矢量的标积。
2
This course mainly includes: vectoralgebra and analytic geometry in space, multivariable calculus and infinite series.
本课程主要内容包括：向量代数与空间解析几何、多元函数微积分、无穷级数等。
3
The main content: vectoralgebra, plane and linear space, special surfaces and secondary surfaces, general quadratic surfaces and general quadric surface.