The scientific calculation of MATLAB is actually "numerical analysis", such as solving linear equations, numerical differentiation, numerical integration, Fourier transform, numerical solution of ordinary differential equations and so on. These things are different from your science. Advanced mathematics teaches you analytical solutions, that is, formulas are pushed and pushed again, and numerical calculations are all point calculations, such as a curve, which is represented by 1000 points in MATLAB.

Numerical Analysis is what you need to learn in the first year of research. That course is called "Engineering Mathematics" or "Numerical Analysis". Only when you learn it can you understand what these algorithms in MATLAB are all about.

So I suggest you lay a foundation. MATLAB is extensive and profound, with many things. I recommend a book for you: the second edition of MATLAB Programming and Application edited by Liu Weiguo, which is especially suitable for beginners.