EXTREMAL VALUES OF DOUBLE AND TRIPLE TRIGONOMETRIC FUNCTIONS

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概要

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• We study the extremal values of the double and the triple trigonometric functions defined via the infinite products. In particular, we show that the extremal values of the triple sine function are intimately related to the mysterious value $ \zeta (3) $. The results also allow us to sketch their graphs.

• Faculty of Mathematics, Kyushu Universityの論文

著者

• Wakayama Masato

  Faculty Of Mathematics Kyushu University

• KUROKAWA Nobushige

  Department of Mathematics Tokyo Institute of Technology

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