I recently acquired a second-hand Texas Instruments TI-92 Plus graphing calculator, which is considered a vintage product, originally released at the end of the last century (1999). It is now regarded as a classic from Texas Instruments. Although I already own a Texas Instruments graphing calculator, the TI-Nspire CX CAS, I personally prefer the classic … Read more
Graphing Basics 1. Basic XY Plane Plotting Commands MATLAB is not only skilled in matrix-related numerical computations but is also suitable for various scientific visualizations. This section will introduce the basic plotting commands in MATLAB for the XY plane and XYZ space, including the plotting, printing, and saving of one-dimensional curves and two-dimensional surfaces. The … Read more
1. Plot Function Draw a Curve Function format: plot(x,y), where x and y are coordinate vectors. Function purpose: To draw a curve with vector x as the x-axis and y as the y-axis. Draw Multiple Curves in the Same Plot plot(x,y1,x,y2,x,y3) uses the common vector x for the x-axis, and y1, y2, y3 for the … Read more
The graphing calculator is a niche market, with the main players being Casio and TI (Texas Instruments). Currently, the major issues with these two giants are their lack of aesthetic appeal, slow hardware and software iterations, and relatively closed systems. The NumWorks graphing calculator is quite impressive, offering a high level of playability, and its … Read more