function f(x)
use comun

!f =exp(x)-3*x*x
f =exp(x)-p*x*x

!f =exp(x) -p*x**4
!Q:
!pi =3.141593
!f =(pi +2*x)*(3 +5*cos(2*x)) -2*sin(2*x)

! x=1 - tripla:
!f =x*x*x*x -5*x*x*x +9*x*x -7*x +2
!f =2 +x*(-7 +x*(9 +x*(-5 +x)))

END
