1. ## Reinmann sum problem?

Problem is: The temperature of a town t months after January can be estimated by the function $f(t) = -23\cos(t\pi/6) + 79$
Find the average temperature from month 5 to month 9

I really just have no idea where to start on this one. Maybe a Reinmann sum and divide by 5?

2. So the f(t) is the tangent line of anytime t months after January.

Take the integral of it from 5 to 9, and do 1/(9-5) * result for average

Reason being is Integral ( f(t) ) gives you the total temperature during those months, and 1/(9-5) is the average of them

3. Oh yea that makes sense. Thanks, it worked.