Least squares (function approximation)

Leigh Mercer (1893–1977) was a noted British wordplay and recreational mathematics expert. He is best known for devising the celebrated palindrome "A man, a plan, a canal — Panama!".

The following mathematical limerick is attributed to him:

$\frac{12+144+20+3\sqrt{4}}{7}+(5\times 11)=9^2+0$

This is read as follows:

A dozen, a gross, and a score

Plus three times the square root of four

Divided by seven

Plus five times eleven

Is nine squared and not a bit more.

References

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