from gekko import GEKKO
# define new GEKKO model
m = GEKKO()
# calculate x to minimize objective
x = m.Var(1)
# use abs to define y
y = m.abs(x)
# define objective to minimize
m.Minimize((y+3)**2)
# solve
m.solve()
# print solution
print('x: ' + str(x.value))
print('y: ' + str(y.value))