So before we really get going with electrodynamics, I think this is a good time to tell you that you
need some mathematics to understand it, at least it's very helpful if you know about this.
So I decided to add here a section where I revisited some of the mathematical concepts that are good
to know.
So here we will discover the complex numbers which consist of a real part and an imaginary part.
We will talk about multidimensional derivatives and we will learn about the Nabala operator, the gradient,
the Kearl and the divergence, and we will discuss multidimensional integration.
And we will also use alternative coordinate systems like the spherical coordinates.
So if you know about all of this, you are good to go.
You can skip this whole course, this whole section at least, and go ahead to the next section where
we will start discussing electrodynamics.
And also, if you are unsure if you want to spend the next two hours on mathematics, I think it's also
OK if you just skip ahead and start with the course.
And then when you notice that there is something you don't really understand, you can always come back
to this section and watch the videos.
So please have fun and join the.