[Gnuplot-info] failed to plot function

[t t <la...@ma...>]

 Dear gnuplot users, 
I want to plot one function 
set terminal postscript eps enhanced 
set output "distr.eps" 
set xrange [0:1]   
set key above 
f(x)=3*x**2/((1.5-x)**2*(x+3))*exp(-(1/(1-2/3*x)+4/3*log(x+3)+5/3*log(abs(3/2-x))-3*log(3)-1+5/3*log(2))/6) 
plot f(1)*x 


and it says: 
all points y value undefined! 
What's wrong with my function? 
f(1) is a real number about 2.7 
Thank you for your attention 
gnuplot 4.6 patchlevel 1
--