T = 10Sin ( (2Pi/365)*X ) + 25 , is the daily average temperature in a village where X is the day of the year.
I have constructed a table of values for 0 < X < 365 and created a graph, however when it comes to differentiating the following I am a bit lost. If someone could talk me through it that would be great:
i) The rate of change of the temperature is given by dT/dX . Find dT/dX and the rate of change of the temperature when X = 150 .