Here's a limerick --
Which, of course, translates to:

Integral z-squared dz
from 1 to the cube root of 3
times the cosine
of three pi over 9
equals log of the cube root of 'e'.

And it's correct, too!
Each side evaluates to 1/3.

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Carolyn Dewey from Edina, Minnesota added a second verse:

The equation's as true as can be.
Each side equals 1 over 3.
But if what's betwixt* is 2 pi over 6,
it also works beautifully.

* between the first parentheses