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TypeError: only length-1 arrays can be converted to Python

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this the code,
______________________________________________________________
import math
import numexpr as ne
import matplotlib.pyplot as plt
import numpy as np
import numba as nb


M = 10
A = 10
D = 0.1
xmin = -4
xmax = 4
n = 800
tfinal = 3
tinicial = 1

# GENERANDO VECTOR CON PUNTOS DE DISCRETIZACION X ESPACIADOS
x= np.linspace(xmin, xmax, n)

#GENERANDO FUNCION ANALITICA
def Cdifuana(M,A,D,x,t):
    temp = A*math.sqrt(4*math.pi*D*t);
    Cdifuana = (M/temp)*math.exp(-x**2 /(4*D*t))

#GENERANDO CONDICION INICIAL

C=(Cdifuana(M,A,D,x,tinicial))
___________________________________________________________

In this code, I try obtain graph comparative  the analytic and numerical
solution for the diffusion equation in 1D, but whe  I define  the analytic
function, run the phase, the compilator show me this message.

Traceback (most recent call last):
  File "D:\Yan\Documents\Aptana Studio 3 Workspace\DIF1DMEDYER\SOLUCION
NUMERICA PARA LA ECUACION DE LA DIFUSION EN 1D DYER", line 34, in <module>
    C=(Cdifuana(M,A,D,x,tinicial))
  File "D:\Yan\Documents\Aptana Studio 3 Workspace\DIF1DMEDYER\SOLUCION
NUMERICA PARA LA ECUACION DE LA DIFUSION EN 1D DYER", line 32, in Cdifuana
    Cdifuana = (M/temp)*math.exp(-x**2 /(4*D*t))
TypeError: only length-1 arrays can be converted to Python

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TypeError: only length-1 arrays can be converted to Python "D.YAN ESCOLAR RAMBAL" <dyeringamsa@gmail.com> - 2013-09-20 21:45 -0500

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