Here you will learn the basics of multidimensional differentiation and integration as well as how to deal with differential equations. These are important tools in physics.
Here you will learn the basics of differential equations (DGL), what types there are (ordinary, partial, linear, homogeneous) and 4 solving methods (separation of variables, variation of constants, exponential and separation ansatz).
Here you learn everything about Kronecker-Delta! Including 4 calculation rules with Einstein's summation convention, typical mistakes and more.
Here you practice the properties of the Kronecker delta by simplifying given expressions as much as possible.