Usage History of 'variational'

The following chart shows how frequently 'variational' appeared in printed materials over time. For example, the word 'variational' occurred 4 times in books in 1790 and 16,451 times in 2008. From 1790 to 2008, the word 'variational' was used a total of 629,710 times in books scanned by Google. See Reference: Google Ngram project.

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