Moodle – Add multi-lang strings in Javascript

As we all know well, Moodle is a multilingual system which, depending on the wishes of the user, can perfectly support many languages. As a rule, when developing a new plugin, there are no big difficulties for the introduction of a language translator, but there are a few nuances about which we will talk about.

Math – Tangent Point Problem and Solution

In this problem the student is supposed to address some claims about tangents and function and to provide graphs which support his answers. In general student can use 1 method of adding a tangent line (by adding a straight line which is movable and with adjustable slope) and 2 methods of adding a function: