Is Matlab Free?
MATLAB is an interactive and mathematical computing programming environment, widely used in the field of data preprocessing, data analysis, exploration, experimentation, algorithm development, application development, problem solving and visualization. MATLAB functions are organized in the form of libraries known as Toolbox. It’s a product of The MathWorks Massachusetts, USA. MATLAB provides ample of features such as ease of use, no variable declaration, complex matrices handling, easily used graphics, concise syntax etc., which distinguishes it from other scientific programming languages such as C and FORTRAN. MATLAB can handle the multidimensional array. Matlab internal data structure is limited to a twodimensional matrix. But to handle multidimensional array, one can create its own function in MATLAB. Hence both Matlab is a great success. let us discuss this is MATLAB free article in detail in this post.
MATLAB system comprises of five main parts
As we studied in the above topic about is Matlab free now we are going ahead with the main five parts of Matlab which are Listed Below:
1. MATLAB Language
It is a highlevel matrix language with functions, control statements, data structures, input/output, and objectoriented programming features.
2. MATLAB Working Environment
This comprises of tools and facilities such as working with variables, importing/exporting dataset in your workspace.
3. Handle Graphics
This is highlevel commands available in MATLAB for 2D & 3D visualizations, animation, image processing, and presentation graphics. Lowlevel commands are also available to make you capable of customizing the appearance of the graph.
4. Mathematical Function Library
There is a huge number of mathematical functions available in MATLAB. From elementary functions like sine, cosine, tan, sum etc. to complex and advanced functions like Bessel function, eigenvalue/eigenvector of the matrix, matrix inverse etc.
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5. Application Program Interface
It’s a library that allows you to write C and Fortran programs, which can interact with MATLAB. It’s a way of calling routines from MATLAB.
MATLAB is not open source software. However, the student version (individual license) of MATLAB costs $50 for students and $150 for home users. The commercial version of MATLAB will cost approx. 11 lakh INR.
Features Of Matlab
The features offered by Matlab will surely make you feel the price is nothing in front of the features it provides. Below are the features:

Platform Independent
MATLAB language is supported by Windows, Linux, Unix, Macintosh. A program written on one platform can be easily run on other platforms. This is platform independence feature.

Full Graphics Capabilities
MATLAB provides advanced graphics which can help visualize the scientific and engineering data very well. 2D,3D diagrams, voluminous graphs, animation, and interactive diagrams are among other graphics. This all charts could be exported into known popular graph formats. The graphs are highly customizable such: One can change the colors lines and marker, add annotations, LATEX expressions, legends, the addition of multiple axes etc.

Ease of Use
MATLAB is an interpreted and interactive language. Programs can be easily written and modified by a user with a builtin integrated development environment and debugger.

Good Source of Help
MATLAB is the technical programming language, which needs to be learned from a good source. From beginner to expert level, the link below may help you learn it:
 http://www.quickcode.co/free/courses/learn/Matlab/66
 https://www.tutorialspoint.com/matlab/matlab_overview.htm
This will help you understand from basics of handling variables, creating scripts, operation on matrices, file handling, text processing till working with structures and map containers. Here is the list of calculations, for which MATLAB is mostly used for:
 2D and 3D Plotting and graphics
 Dealing with Matrices and Arrays
 Nonlinear Functions
 Data Analysis
 Linear Algebra
 Algebraic Equations
 Statistics
 Calculus and Differential Equations
 Numerical Calculations
 Transforms
 Integration
 Curve Fitting
 Various other special functions
Below are the areas of science and engineering where MATLAB is widely used:
 Computational Finance
 Control Systems
 Test and Biology
 Computational Biology
 Image Processing
 Video Processing
 Signal Processing
 Communications
Technical Questions Of Matlab
There are few technical questions which need to be known while working with Matlab:
Q1. Difference between Mfile and MEX files.
Answer:
Mfile: It’s a plain ASCII text, which gets interpreted at the runtime. These are basically like subprograms stored in a text file with .m extension and hence known as Mfiles. While dealing with MATLAB development, most of the scenario MATLAB is used.
MEX file: These are C and C++ files which are linked directly to MATLAB at the time of run time. MEX files have the capacity to crash MATLAB application, so that needs to be handled carefully.
Q2. Explain Interpolation and Extrapolation in MATLAB along with their types?
Answer:
Interpolation is a word used for taking out the function values between data point in an array. Whereas Extrapolation is a word referred to finding values beyond the endpoint of the array. Interpolation & Extrapolation are of two types:
a. Linear Interpolation and Extrapolation
b. Quadratic Interpolation and Extrapolation
Q3. What is XmathMatlab? Mention the Xmath features?
Answer:
Xmath is an interactive scripting and graphics environment, for Xwindow workstations. Features of Xmath is listed below:
 Debugging tools with GUI features
 Color graphics can be pointed and clickable
 Libraries that are C and LNX C language compatible
 Scripting language with OOP features
Q4. How to change/modify the MATLAB path?
Answer:
One can use: use the PathTool GUI to modify the MATLAB path. Add path directories from the command line and then add the path torc in order to write the current path back to ‘pathdef.m.’ In case one doesn’t have permission to write for ‘pathdef.m’ then paths can be written into a different file, you can execute from your ‘startup.m.’
Q5. How polynomials can be represented in MatLab?
Answer:
In MATLAB, a polynomial is denoted by a vector. One needs to enter the coefficient of the polynomial into the vector in descending order and hence polynomial can be created.
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