%load_ext py2tex

from math import *

%%tex a=1.0
b = -1.0
c = -1.0
x_1=(-b+sqrt(b**2-4*a*c))/(2*a)
x_2=(-b-sqrt(b**2-4*a*c))/(2*a)
varphi = x_1

%texnr x_1_2=x_1+x_2

%texformat %.3e

%%tex alpha = pi/3
cos(alpha)**2+sin(alpha)**2
sin(alpha)

from unum.units import *

%texformat %.3f

%%texnr t = 3.0*s
a = 4.5*(m/s**2)
v_0 = 2*(m/s)

%tex x = v_0*t+(a*t**2)/2