Original
At the critical point where {{MATH_431}}, the function {{MATH_432}} has {{CMD_433}}
{{CMD_434}}
{{CMD_435}}no local extremum, because {{MATH_436}} is increasing on {{MATH_437}} and increasing on {{MATH_438}}. {{CMD_439}}
{{CMD_440}}a local maximum, because {{MATH_441}} is increasing on {{MATH_442}} and decreasing on {{MATH_443}}. {{CMD_444}}
{{CMD_445}}a local minimum, because {{MATH_446}} is decreasing on {{MATH_447}} and increasing on {{MATH_448}}. {{CMD_449}}
{{CMD_450}}no local extremum, because {{MATH_451}} is decreasing on{{MATH_452}} and decreasing on {{MATH_453}}. {{CMD_454}}
{{CMD_455}}
{{CMD_456}}
Do your answers agree with the graphs of {{MATH_457}} and {{MATH_458}} given in the picture below?
{{CMD_459}}
{{ENV_460}}
{{COMMENT_461}}
{{COMMENT_462}}
{{CMD_463}}
{{CMD_464}}
{{CMD_465}}