Since {{MATH_581}}, there is potentially an inflection point at {{MATH_582}}. But, for any {{MATH_583}}, {{MATH_584}}. Hence there is no inflection point at {{MATH_585}}. The curve is concave up for all {{MATH_586}} and remains concave up for all {{MATH_587}}. {{CMD_588}} {{CMD_589}} {{CMD_590}} Describe the concavity of {{MATH_591}}.