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Generalized inequalities for ratio functions of trigonometric and hyperbolic functions. (arXiv:1912.04277v1 [math.GM]) http://arxiv.org/abs/1912.04277
Generalized inequalities for ratio functions of trigonometric and hyperbolic functions. (arXiv:1912.04277v1 [math.GM]) http://arxiv.org/abs/1912.04277