![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
In a spring day, during the daylight the temperature was high when compared to night time.
Graph :
Graph of the outdoor temperature as the function of time in a spring day :
axis : Temperature of the day denoted by
.
axis : Time of the day denoted by
.
![\"\"](\"http://www.mathskey.com/userfiles/50-20-17.gif\")
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")
Graph of the temperature in a spring day :
.