Does anyone know of any PROOF WITHOUT WORDS for logarithmic functions?
The only one I've seen in calculus based and I need one for high school math kids in MATH 1,2,3.


Any suggestions would be appreciated!



proof without words for logarithms
Here are some:


<http://www.mat.uniroma2.it/~liverani/Inform04/Logarithm.pdf> (Proof without words: ln(a · b) = ln a + ln b)


<http://www.maa.org/sites/default/files/Ferlini-MaMag-2001.pdf> (Proof Without Words: Logarithm of a Number and Its Reciprocal).


<https://www.jstor.org/stable/2690586> (Proof without Words: The Arithmetic-Logarithmic-Geometric Mean Inequality) reproduced in <http://apcentral.collegeboard.com/apc/public/repository/ap08_Nelsen_proofs.pdf> (A Sampler of Visual Proofs in First-year Calculus).


