Derivatives and differential of a function of several variables.
The application is designed for students of full-time and correspondence courses for high school students for those who want to learn or to repeat or to learn how to calculate partial derivatives of several variables functions. It may be used alone as a textbook and problem book at the same time, as well as an addition to textbooks and problem books recommended by the institution.
The main purpose of the application is to assist students in mastering key theoretical points and techniques of differentiation, as well as practical skills in getting solutions for the most common tasks on calculation of derivatives and differentials of several variables functions.
This application contains the required minimum theoretical information, detailed analysis of solutions of typical examples, a set of more than 100 problems with answers in an analytical form for self-development techniques of differentiation and a control work of 10 tasks.
It is recommended firstly to repeat the theory of limits, derivatives of one variable functions in Applications "MathAn.Limits" and "Derivatives. Math.".

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