Solutions for FCUP's Numerical Analysis Assignments

3 - Splines/graphics/graphs.gnuplot

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+#!/usr/bin/gnuplot
+
+set output "a.png";
+set terminal png size 1200,900 enhanced font "Helvetica, 20";
+
+plot "a_polynomial.txt" with l lw 4 t "Polinomial", "a_spline.txt" with l lw 4 t "Spline Cúbico";
+
+set output "b.png";
+
+f(x) = 4*x**2 + sin(9*x)
+plot f(x) with l lw 4 t "f(x)", "b_polynomial.txt" with l lw 4 t "Polinomial", "b_spline.txt" with l lw 4 t "Spline Cúbico";