Level 2.3 : y = -x*sin(x)
# 作図方法 gnuplot<<EOF clear plot -x*sin(x) set grid set xlabel "x" set ylabel "y" set title "y = -x*sin(x)" set terminal png set output "func2_3.png" replot set terminal pdf set output "func2_3.pdf" replot EOF
# 作図方法 gnuplot<<EOF clear plot -x*sin(x) set grid set xlabel "x" set ylabel "y" set title "y = -x*sin(x)" set terminal png set output "func2_3.png" replot set terminal pdf set output "func2_3.pdf" replot EOF