【摘要】 利用Tchebycheff积分不等式构造了几个三角函数不等式.估计了与sinx／x，x∈［0，π］有关的定积分的值.得到一些积分不等式.改进或推广了有关结果。更多还原

【Abstract】 By using the Tchebycheff’s integral inequality the author forms some inequalitiesof trigonometric functions, furthermore, obtains severaral integral inequalities and estimates ofdefinite integrals related to sinx/x, x∈[0, π/2]. They improve and extend the results in thereferences.更多还原