from IPython.display import Math
Math(r'F(k) = \int_{-\infty}^{\infty} f(x) e^{2\pi i k} dx')
from sympy import init_printing; init_printing()
import sympy as sym
from sympy import *
x, y, z = sym.symbols("x y z")
Rational(3,2)*pi + exp(I*x) / (x**2 + y)