Journal of Mathematical Inequalities · Volume 18, Issue 3 On convexity and power series expansion for logarithm of normalized tail of power series expansion for square of tangent 18-51 Pages 937-952 DOI 10.7153/jmi-2024-18-51 Downloads Short PDF Full PDF PNG Authors Gui-Zhi Zhang Feng Qi Keywords Maclaurin power series expansion normalized tail tangent square logarithm convexity monotonicity rule derivative formula ratio Subject classes 41A58 26A06 26A09 26A48 26A51 33B10