Use Excel or MATLAB to draw the function v and its first and second derivatives v' and v", for 0

PLEASE ANSWER THE LAST TWO QUESTION

Extracted text: Use Excel or MATLAB to draw the function v and its first and second derivatives v' and v", for 0 < x="">< 3.5.="" then="" use="" these="" curves="" to="" confirm="" that="" the="" points="" you="" have="" found="" are="" minimum,="" maximum="" and="" inflexion="" points="" by="" stating="" the="" behaviour="" of="" cach="" of="" the="" three="" curves="" at="" each="" of="" these="" points.="" as="" you="" would="" see="" from="" the="" curve,="" the="" minimum="" velocity="" occurs="" at="" x="0," while="" the="" maximum="" velocity="" in="" the="" given="" period="" 0="">< x="">< 3.5,="" occurs="" at="" x="3.5" !="" explain="" why="" our="" method="" could="" not="" identify="" x="0" and="" x="3.5" as="" maximum="" and="" minimum="" points?="" are="" the="" points="" you="" found="" above="" still="" considered="" maximum="" and="" minimum="" points?="" how="" can="" we="" modify="" out="" method="" to="" easily="" account="" for="" x="0" and="" x="">