\/3
         /
        |  2            3 x 3.14           3_
        | z dz  x  cos( ----------) = ln (\/e )
        |                  9
       /
        1

Integral (z squared) dz,

from one to the cube root of three,

times the cosine,

of three pi over nine,

equals ln of the cube root of e.

Author unknown

Try it! It's true.