python syntax error output
Question: Please could you help me by fixing the error with my code. When I print last
line I get a syntax error message:

    
    
    import math
    
    
    m_ = 900         # identifier for normal distribution mean   [mm]
    s_d = 1          # identifier for normal distribution standard deviation [mm]
    
    print "DISTRIBUTION OF A PLATE WIDTH:" " MEAN", "=",m_,"," "STD DEV", "=", s_d
    print ""
    print "Using functions from the math library ..."
    
    
    # The probability density function(pdf) for a normal distribution with mean m_ and 
    standard deviation s_d    
    ftotal = 0
    term = 0.0
    count = 0
    while abs(term) > 911:
        ftotal += term
        count += 1
        term = term * xx / float(count)
    
    
    print "x"  "          " " f(x)" "           " " F(x)"
    print "890" ""  (1 / ((s_d * (2 * math.pi) ** -0.5)) * math.exp((- (x - m_) ** 2) / (2 * (s_d) ** 2),   0.5 * (1 + math.erf((x - m_) / s_d * m.sqrt(2))
    


Answer: Define x before the while loop. From the last two lines where you have denoted
x by 890 so I am guessing `x = 890`.

    
    
    x = 890
    #your while loop goes here
    
    print "x"  "          " " f(x)" "           " " F(x)"
    print "890" ,  (1 / ((s_d * (2 * math.pi) ** -0.5))) * math.exp((- (x - m_) ** 2) / (2 * (s_d) ** 2))  , 0.5 * (1 + math.erf((x - m_) / s_d * math.sqrt(2)))
    

I can't remember the exact formula but if the above expressions are correctly
put, you won't get a syntax error.

