![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
A frozen pie is placed in an oven for an hour, then temperature of the pie increases rapidly.
\After one hour, the pie is taken out from an oven then the temperature of the pie decreases rapidly and it reaches to a room temperature.
\Graph :
\Graph of the temperature of the pie as the function of time :
\![\"\"](\"/userfiles/50-20-20.gif\")
![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
Graph of the frozen pie :
\.