# set terminal svg size 600,400 dynamic enhanced fname 'arial'  fsize 10 mousing name "fillcrvs_2" butt solid 
# set output 'fillcrvs.2.svg'
set key outside right top vertical Right noreverse enhanced autotitles nobox
set title "Intersection of two parabolas" 
plot x*x with filledcurves, 50-x*x with filledcurves, x*x with line lt 1