my first slide

example

my example text goes here $y=x^3+5x^2-7$

my second slide

example

my other example text goes here $y=\sin(x^3+5)+\tan x$

example

yet more text \[\frac{\mathrm{d}y}{\mathrm{d}x}=\sec x\]

my third slide

example

More text and \[\begin{array}{cc}1 & 2\\3 & 4\end{array}\]