#-------------------------------------------------------------------------------
# Copyright 2012 Yuriy Lagodiuk
# 
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# 
#   http://www.apache.org/licenses/LICENSE-2.0
# 
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#-------------------------------------------------------------------------------
Start time is: Thu Dec 20 03:06:30 EET 2012

f(x) = (0.18206317394353455 / x)
1        12.3306847201965
2        12.3306847201965

f(x) = (0.13096000716683331 / x)
3        12.152669766801575
4        12.152669766801575

f(x) = (0.12762196997306274 / x)
5        12.152069805558092
6        12.152069805558092
7        12.152069805558092

f(x) = (0.3346849273504282 / ((((-22.4152051827909) * x) + 40.960688022849595) / x))
8        12.148014860354863

f(x) = ((-0.03796031129649258) / (cos(x) / ((-2.9198621819690938) / x)))
9        11.638011754782829
10       11.638011754782829

f(x) = ((-20.631874183396533) / (((-9.207249236246206) / x) - (x * 27.91345503131871)))
11       9.952693006480558
12       9.952693006480558
13       9.952693006480558

f(x) = ((-11.825393899136301) / ((27.294600788294975 / ((0.5155794242305176 / x) - (x * 17.31342263836807))) - (x * 20.565965766798282)))
14       9.888627753702877

f(x) = ((-15.532470172735072) / ((25.778228513107628 / ((0.18734779505625987 / x) - (x * 6.391452889555231))) - (x * 21.629379422632773)))
15       9.792881118418999

f(x) = ((-11.825393899136301) / ((41.90109261338367 / ((0.46759657320866577 / x) - (x * 15.120516570080058))) - (x * 17.102239047167586)))
16       9.791571430938934

f(x) = ((-22.66355680142012) / ((15.948637956747325 / (((-2.6050273232187884) / x) - (x * (-0.2602149380973864)))) - (17.992754706738232 / x)))
17       0.3622781954825648

Best function is:
f(x) = ((-22.66355680142012) / ((15.948637956747325 / (((-2.6050273232187884) / x) - (x * (-0.2602149380973864)))) - (17.992754706738232 / x)))

End time is: Thu Dec 20 03:06:40 EET 2012