#data12.txt
#1	1	1
#2	4	1
#3	9	1
#4	16	10
#5	25	1
#6	36	1
#7	49	1
#8	64	1
#9	80	1
#10	97	1

set terminal png size 600, 400
set output 'plot.png'

#Fit data with the following function
f(x) = a*x**2 #Fitting Function
fit f(x) 'data12.txt' via a
pl 'data12.txt' w p, f(x) w l