Markdown with R and Python

Some Python

x = [1,2,3,4,5,6]
y = [i*i for i in x]

And some R

df <- data.frame(x=py$x, y=py$y)
knitr::kable(df)

And Python again

from matplotlib import pyplot as pl
pl.plot(r.df.x, r.df.y)
pl.show()

Now some LaTeX

An inline \(\int_a^bf(x)dx\) formula and a block formula

$$\sum_{i=1}^n\int_{a_i}^{b_i}f(\tau)d\tau$$