The function {{MATH_94}} has {{MATH_95}} inflection point(s). {{CMD_96}} Since {{MATH_97}} {{MATH_98}} is {{CMD_99}}{{CMD_100}}positive{{CMD_101}}{{CMD_102}}negative{{CMD_103}}{{CMD_104}} on {{MATH_105}}. {{CMD_106}} Since {{MATH_107}} for all {{MATH_108}}, {{MATH_109}} is {{CMD_110}}{{CMD_111}}concave up{{CMD_112}}{{CMD_113}}concave down{{CMD_114}}{{CMD_115}} on {{MATH_116}}. {{CMD_117}} {{CMD_118}} {{CMD_119}} {{CMD_120}} {{CMD_121}} {{CMD_122}} {{CMD_123}} {{CMD_124}} {{CMD_125}} {{CMD_126}} {{CMD_127}} {{CMD_128}}