MATLAB
In plain terms
A numerical computing environment and language for engineering and science.
Going deeper
MATLAB excels at matrix math, simulations, and signal processing with extensive toolboxes and visualization. It's commercial and widespread in engineering.
Under the hood
Everything is a matrix, making linear algebra concise; Simulink adds model-based design, but licensing costs and lock-in are concerns.
Examples
Control systems, signal processing, image analysis, academic engineering, Simulink.
Think of it like...
Like a specialized engineering calculator grown into a full lab bench for numerical work.