Slides written in markup languages have good support for mathematics and computer code

Mathematics:

$$ F(x) = \int_a^b f(x)dx$$

Computer code: 

import numpy

def trapezoidal(f, a, b, n=100):
    """Integrate f from a to b with 100 intervals."""
    x = numpy.linspace(a, b, n+1)
    F = (b-a)/float(n)*(numpy.sum(f(x)) - 0.5*(f(a) + f(b)))
    return F

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