On a conjecture of double inequality for the tangent function
In this paper, we prove the conjecture posed by J.-L. Zhao, Q.-M. Luo,
B.-N. Guo and F. Qi (Remarks on inequalities for the tangent function,
Hacettepe J. Math. Stat., 41, no. 4, 499-506, 2012) about a sharp double inequality of the tangent function, which is a generalization of the
Becker-Stark inequality. Also, the new double inequality is compared
with the double inequality presented in [3]
Keywords:
Tangent function, L’Hôpital’s rule, inequality, best constants Concavity,
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- Yayın Aralığı: Yılda 6 Sayı
- Başlangıç: 2002
- Yayıncı: Hacettepe Üniversitesi Fen Fakultesi
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