Iwas impressed by how many community members are out there sharing their questions and insights about MATLAB. Every day there are hundreds of discussions between users of widely varying technical knowledge and skills. Thank you to everyone who has made our community conversations such warm and vibrant places to hang out!
In the MATLAB Answers About page, there is a section that offers guidance on how to ask good questions and how to write good answers. Here is a quick tip list that you might find helpful if you are new at asking questions in the community.
Often students ask questions about their homework assignments. Doug Hull wrote a post to help students understand how to get help with their homework. Several community members also shared pointers as comments to this post.
A numerical computing environment and programming language, MATLAB, was developed by MathWorks. It allows the plotting of functions, matrix manipulations, implementation of algorithms, interfacing with programs written in other languages, including C, C++, and Fortran, and creation of user interfaces. For all budding data science and machine learning professionals, learning MATLAB will help you to focus on areas such as architecture modeling, analysis environment, and Model-Based Design. We have compiled a list of the most frequently asked MATLAB Interview Questions along with their answers to help you prepare better and ace your upcoming interviews.
This section on MATLAB Interview Questions covers commonly asked questions during the interview process. Whether you are new to the interview process or are an experienced professional, learning these questions will help you increase your confidence and ace your upcoming interview.
Ans. MATLAB is an acronym for MATrix LABoratory. It is an open-source software/API which was initially developed for mathematical calculations, including matrix operations. The latest software version can perform various complex calculations such as data analysis and visualization, scientific and engineering graphics, etc. Its prime features also include simulation and modeling.
Installation is the same for all operating systems. You can download the software from any safe website such as its source
mathworks.com or
sourceforge.net. Simply open the browser, navigate to the URL above, and download the software.
But be aware of the fact that MATLAB is such a huge software with its latest update of more than 20 GB. It will not be installed overnight or in a single attempt. So, it is recommended to use any internet download manager to install it on a multi-day attempt.
Ans. MATLAB language is a high-level matrix language. It has control structures, functions, data structures, input/ output, and OOP features. MATLAB API allows to the author of C and FORTRAN programs to interact with MATLAB. It is used for various industry-level designing processes and for running the control systems and automation of different types of machines by defining a particular set of codes for an object.
Ans. Any differential equation can be solved following a set of instructions and proper syntax. But for more accuracy, we use some solvers, casually known as ODE solvers in general, used for ordinary differential equations. Some of the commonly used ODE solvers are ode23, ode45, ode15s, and ode23s.
Ans. MATLAB is a high-performance language for technical computing. Computation, visualization, and programming are integrated with MATLAB in an easy-to-use environment. It helps the user in the development of algorithms, complex calculations, simulation, modeling, and prototyping of data.
Ans. A neural network is an adaptive system that learns by using interconnected nodes or neurons in a layered structure that resembles a human brain. A neural network can learn from data, so it can be trained to recognize patterns, classify data, and forecast future events.
It breaks down the input into layers of abstraction. It can be trained using many examples to recognize patterns in speech or images, just as the human brain does. Its behavior is defined by how its individual elements are connected and by the strength or weights of those connections. MATLAB lets you develop neural networks with just a few lines of code.
MATLAB and Deep Learning Toolbox provide command-line functions and apps for creating, training, and simulating shallow neural networks. The apps make it easy to develop neural networks for tasks such as classification, regression (including time-series regression), and clustering. After creating your networks in these tools, you can automatically generate MATLAB code to capture your work and automate tasks.
Ans. To create an array with n number of elements in m number of rows, separate the elements with either a space or a comma. For example, to create a matrix A of order 3 X 3, we write it as:
Ans. SIMULINK in MATLAB is used to create a model for some process, for example, a simplified motion of a car or any control system process. When you use MATLAB and Simulink together, you combine textual and graphical programming to design your system in a simulation environment. SIMULINK can be accessed in MATLAB from the Home tab itself. SIMULINK is basically a graphical block diagramming tool with a customizable set of block libraries. When opened, Simulink opens with the Library Browser. The Library Browser is used for building simulation models.
Model elements are added by selecting the appropriate elements from the Library Browser and dragging them into the Model window. Alternatively, you can copy and paste the model elements into the model window. Here you can choose any model based on your choice of developing any project.
Clustering is a way to separate groups of objects. K-means clustering treats each object as having a location in space. It finds partitions such that objects within each cluster are as close to each other as possible and as far from objects in other clusters as possible. K-means clustering requires that you specify the number of clusters to be partitioned and a distance metric to quantify how close two objects are to each other.
Ans. A support vector machine (SVM) is a supervised learning algorithm used for many classification and regression problems, including signal processing medical applications, natural language processing, and speech and image recognition. The main goal of the SVM algorithm is to separate data points of one class from those of another class to the best degree possible.
Support vectors refer to a subset of the training observations that identify the location of the separating hyperplane. The standard SVM algorithm is formulated for binary classification problems, and multiclass problems are typically reduced to a series of binary ones. You can use a support vector machine (SVM) when your data has exactly two classes.
Ans. MATLAB working environment has various tools to work with MATLAB. It has facilities to manage variables. MATLAB supports the export and import of data across applications. Certain tools are available to develop and manage MATLAB files. Debugging and profiling of MATLAB applications are more flexible with MATLAB. The blank space between the functions and command history box is where we can write the codes.
Ans. An M file is a text file used by MATLAB. It can store a script, class, or individual function in the MATLAB language. M files are used for executing algorithms, plotting graphs, and performing other mathematical operations. It is the basic type of file that MATLAB has. The extension for the m file is .m . Any file with the extension .m is an m-file.
Ans. P-code is a way to safe-key your source code such that others do not have any access to the source code of any of your projects. The original extension for a MATLAB file is .m, but for a p-code applied file is .p . A P-code file behaves the same as the MATLAB source. When MATLAB P-codes a file, the file is obfuscated and not encrypted.
Ans. Stress Analysis or Finite Element Analysis is a computational method for predicting how any object will react to real-world forces, heat, vibrations, etc. We are well aware of the fact that MATLAB is a multidimensional software that finds its application in various disciples of engineering; for example, mechanical engineering makes use of stress analysis to design automotive et al.
A: MATLAB is a tool used for technical computing, calculation, and visualization in a unified environment. The full form of MATLAB is MATrix LABoratory, so it is perfect for matrix manipulation and problem-solving that are related to Linear Algebra, Modelling, Simulation and Control applications, and many more.
A: One of the disadvantages of MATLAB is that it is an interpreted language, so it may perform slower as compared to a compiled language.
Q: Is MATLAB better than Python?
A: MATLAB is the fastest platform when the usage of certain MATLAB functions is avoided by code. Although slower, Python is often compared to MATLAB, especially for using over 12 processing cores while jobs are running in parallel.
A: MATLAB is used by several engineers as well as scientists across the world for various applications. They use it in academia and industry, which include image and video processing, deep learning and machine learning, signal processing and communications, control systems, computational finance, test and measurement, and computational biology.
Q: What is MATLAB written in?
A: MATLAB has its own coding language, which is simple to use as compared to the other coding languages. Apart from this, you can also choose a language in which you would like to code. It comes with in-built compilers for most popular coding languages such as C, C++, and Java. You can change the language as per your preferences.
3a8082e126