[EN] GraficoAR is a lightweight, pure Java application for 2D mathematical function plotting and real-time analysis. Built with Swing without heavy external libraries, it features a custom recursive parsing engine that respects operator precedence (+,-,*,/). Features: dynamic Cartesian graphing, adaptive grid zooming/labeling, numerical differentiation (plots the 1st derivative in blue), and definite integration (Riemann sums with text output and transparent blue geometric shading under the...