#!/usr/bin/python3
import sympy as sym
import sympy.printing as printing
import mpmath as mp

def main():
        x=sym.Symbol('x')
        y=sym.integrate(sym.exp(-x),x)
        print ("Result={}".format(y))
        print ("${}$".format(printing.latex(y)))
if __name__=="__main__":
          main()