What does linspace do in MATLAB?

The linspace function generates linearly spaced vectors between two specified values. The syntax "linspace(start, end, n)" creates n evenly distributed points. It is commonly used for creating axes for plotting, generating test data for numerical analysis, and defining ranges for mathematical functions in visualizations.

How to transpose a matrix in MATLAB?

Transpose a matrix in MATLAB using the apostrophe operator (') or the transpose function. For matrix A, type "A'" or "transpose(A)" to swap rows and columns. For complex matrices, use "A.'" for non-conjugate transpose to preserve complex values without taking the complex conjugate of elements.

How to use e in MATLAB?

Use Euler's number e in MATLAB with the exp() function. For e raised to a power, type "exp(x)" where x is the exponent. For example, exp(1) returns approximately 2.7183. MATLAB doesn't have a built-in constant 'e', so always use exp(1) to represent Euler's number in calculations and mathematical expressions.

How to open Simulink in MATLAB?

Open Simulink in MATLAB by typing "simulink" in the command window and pressing Enter, or by clicking the Simulink icon in the Home tab toolbar. This launches the Simulink Start Page where you can create new models, open existing ones, or browse example projects for learning system modeling.

How to call a function in MATLAB?

Call a function in MATLAB by typing its name followed by input arguments in parentheses. For example, "result = myFunction(x, y)" passes x and y to the function and stores the output in result. Ensure the function file is saved and located in the current path or MATLAB's search path directories.

What language is MATLAB written in?

MATLAB is primarily written in C, C++, and Java. The core computational engine and many built-in functions are implemented in C and C++ for performance, while the user interface components use Java. Users write MATLAB code in its proprietary M-language, which the interpreter processes to execute underlying compiled routines.

How to comment out multiple lines in MATLAB?

Comment out multiple lines in MATLAB by selecting the lines and pressing Ctrl+R (Windows) or Cmd+R (Mac). Alternatively, wrap code in block comment syntax using %{ at the start and %} at the end. To uncomment, select lines and press Ctrl+T. The Editor menu also provides Comment and Uncomment options under the Text menu.

How to plot a function in MATLAB?

Plot a mathematical function in MATLAB using fplot() for continuous functions or plot() with computed values. For fplot, type "fplot(@(x) sin(x), [0 2*pi])" to plot sine from 0 to 2π. Alternatively, define x values with linspace, compute y values, and use plot(x, y). Customize with title, xlabel, ylabel, and grid commands.

How to use fprintf in MATLAB?

Use fprintf for formatted output by specifying format specifiers like %d for integers, %f for floats, and %s for strings. The syntax is "fprintf('format string', variables)". Add "n" for new lines to create line breaks. It prints to the command window by default or writes to files when a file identifier is provided.

How to update MATLAB?

Update MATLAB through the MathWorks website or the built-in update feature. In MATLAB, go to the Home tab, click Add-Ons, then select "Check for Updates" to see available releases. Alternatively, download the latest version from your MathWorks account portal and run the installer to upgrade your installation.

MATLAB Practice Test

Updated October 2026

Oct 13, 202612 min read

What changed for MATLAB - MATLAB Technical Computing in 2026

MATLAB Certified Professional Exam costs USD 400 per attempt. (source)
Professional exam dates confirmed for late 2026: November 17 (Novi, MI) and December 8 (Santa Clara, CA). (source)
MATLAB Associate exam: 1.5 hours, 50 multiple-choice questions, online or at certified testing centers. (source)
Professional exam: 3.5 hours, 25 multiple-choice plus 8 performance-based problems, at MathWorks-owned facilities. (source)
Professional exam requires prior passage of the Associate-level certification. (source)

Last verified: 2026-10-13 against MathWorks official certification pages.

Duration: Associate 1.5 hours; Professional 3.5 hours.
Questions: Associate 50 multiple-choice; Professional 25 multiple-choice + 8 performance-based.
Cost: Professional USD 400 per exam (excludes taxes); Associate price varies by location/currency.
Registration: Associate through Webassessor; Professional through MathWorks training schedule.
Eligibility: Must be 18+ years old; Professional requires Associate certification first.
Passing score: Varies by exam version to maintain consistent difficulty per MathWorks policy.

MATLAB 2026 is a multi-paradigm programming language that is useful in engineering and mathematics domains. It is used for algorithm development, modeling, prototyping, data analysis, simulation and imaging. Practice with the free MATLAB - MATLAB Technical Computing practice test on PracticeTestGeeks (7 questions with answer explanations).

MATLAB is a high-level technical computing language that allows users to solve problems faster than with other traditional programming languages. It also provides an interactive environment for algorithm development and data visualization.

Free MATLAB - MATLAB Technical Computing Study Tools

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✓Review the official MATLAB exam content outline
✓Take a diagnostic practice test to identify weak areas
✓Create a study schedule (4-8 weeks recommended)
✓Focus on your weakest domains first
✓Complete at least 3 full-length practice exams
✓Review all incorrect answers with detailed explanations
✓Take a final practice test 1 week before exam day

Linspace MATLAB

MATLAB Grader is an online tool that allows educators to scale assessments, autograde assignments, and provide feedback. Using a single web browser, instructors can create and manage interactive course assignments, use an extensive library of reusable example courses and activities, and track student progress with detailed individual and aggregate analytics.

Unlike C++, which can be difficult to read and write, MATLAB is a concise programming language that makes it easy to understand and share code with others. It also enables users to perform symbolic math operations with a variety of tools and algorithms.

A MATLAB screen contains several panels, including a command window, workspace panel, current directory panel, and command history panel. The command window lets users run commands on variables and the workspace panel lets them define new variables.

MATLAB can also call functions written in a large number of languages. This allows users to share code across teams. It can also be used as a programming language for simulations. It also provides a number of different libraries, or toolboxes, to meet the needs of specific users.

What is MATLAB?	MATLAB (Matrix Laboratory) is a high-level programming language and interactive environment developed by MathWorks. It is designed for numerical computation, data analysis, algorithm development, and visualization, making it widely used in engineering, science, and mathematics.
Is MATLAB a programming language?	Yes, MATLAB is both a programming language and a computing environment. It uses its own proprietary language optimized for matrix operations, scientific computing, and technical applications. The language supports procedural and object-oriented programming paradigms.
What does MATLAB stand for?	MATLAB stands for Matrix Laboratory. The name reflects its core design purpose of making matrix computations simple and efficient. Originally developed in the late 1970s, MATLAB has evolved into a comprehensive platform for technical computing.
What is MATLAB used for?	MATLAB is used for numerical analysis, signal processing, image processing, machine learning, control systems, and data visualization. Industries including aerospace, automotive, finance, and biomedical research rely on MATLAB for complex computational tasks and algorithm development.

What is MATLAB?

MATLAB (Matrix Laboratory) is a high-level programming language and interactive environment developed by MathWorks. It is designed for numerical computation, data analysis, algorithm development, and visualization, making it widely used in engineering, science, and mathematics.

Is MATLAB a programming language?

Yes, MATLAB is both a programming language and a computing environment. It uses its own proprietary language optimized for matrix operations, scientific computing, and technical applications. The language supports procedural and object-oriented programming paradigms.

What does MATLAB stand for?

MATLAB stands for Matrix Laboratory. The name reflects its core design purpose of making matrix computations simple and efficient. Originally developed in the late 1970s, MATLAB has evolved into a comprehensive platform for technical computing.

What is MATLAB used for?

MATLAB is used for numerical analysis, signal processing, image processing, machine learning, control systems, and data visualization. Industries including aerospace, automotive, finance, and biomedical research rely on MATLAB for complex computational tasks and algorithm development.

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MATLAB: Pros and Cons

✅Pros

+matlab — mATLAB credential is recognized by employers and industry professionals
+Higher earning potential compared to non-credentialed peers
+Expanded career opportunities and professional advancement
+Structured learning path builds comprehensive knowledge
+Professional development that stays current with industry standards

❌Cons

−Preparation requires significant time and study commitment
−Associated costs for exams, materials, and renewal fees
−Continuing education needed to maintain credentials
−Competition for advanced positions can be challenging
−Requirements and standards may vary by state or region

Pros and Cons at a Glance

Pros	Cons
matlab — mATLAB credential is recognized by employers and industry professionals	Preparation requires significant time and study commitment
Higher earning potential compared to non-credentialed peers	Associated costs for exams, materials, and renewal fees
Expanded career opportunities and professional advancement	Continuing education needed to maintain credentials
Structured learning path builds comprehensive knowledge	Competition for advanced positions can be challenging
Professional development that stays current with industry standards	Requirements and standards may vary by state or region

Sample MATLAB - MATLAB Technical Computing Practice Questions

Try these questions from our free MATLAB - MATLAB Technical Computing practice tests. The correct answer and an explanation follow each question.

Which MATLAB function reads a JSON file and converts it to a MATLAB structure?
- A. jsondecode(fileread('data.json'))
- B. jsonload('data.json')
- C. readjson('data.json')
- D. importjson('data.json')

Answer: A. jsondecode(fileread('data.json'))

MATLAB has no single jsonread function; the standard pattern is fileread() to get the raw text then jsondecode() to parse it into a struct.

What is the final value of the variable `total` after the following MATLAB code is executed? ```matlab total = 0; data = [10, -5, 20, 0, -15, 30]; for k = 1:length(data) if data(k) < 0 continue; end total = total + data(k); end disp(total); ```

A. 60
B. 40
C. 75
D. An error will occur because `continue` is not a valid command.

Answer: A. 60

The `continue` statement skips the remainder of the current loop iteration and proceeds to the next one. When the loop encounters a negative number (-5 and -15), the `continue` command is executed, skipping the `total = total + data(k);` line for that iteration. Therefore, only the non-negative numbers are added: 10 + 20 + 0 + 30 = 60.

A script `mainScript.m` contains the following code: ```matlab % mainScript.m value = 10; modifyValue(value); disp(value); ``` The function `modifyValue` is defined in a separate file `modifyValue.m`: ```matlab function modifyValue(inputArg) inputArg = inputArg + 5; end ``` Assuming both files are in the current directory, what is displayed in the Command Window when `mainScript` is run?

A. 15
B. 10
C. An error is thrown because `value` is not returned.
D. 5

Answer: B. 10

MATLAB passes arguments to functions by value. This means that when `value` is passed to `modifyValue`, a local copy of the variable is created within the function's workspace named `inputArg`. Modifying `inputArg` inside the function does not affect the original `value` variable in the script's (base) workspace. Therefore, the value of `value` remains 10.

Which MATLAB function evaluates a string as a MATLAB expression?

A. run()
B. exec()
C. eval()
D. parse()

Answer: C. eval()

eval() executes the MATLAB code contained in a character vector or string.

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