This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Huellkurve wurfparabel.svg de Hllkurve Wurfparabel gnuplot rc reset tan beta cos beta set xrange set yrange set key set border set tic nomirror out scale set xlabel 'x in m' set ylabel 'y in m' set angles degrees set terminal svg lw font 'Arial Bold ' set output 'huellkurvewurfparabel svg' plot for beta title sprintf