For time t≥0t\geq 0t≥0, the height hhh of an object suspended from a spring is given by h(t)=5+8cos(πt4)h(t)=5+8\cos\left(\dfrac{\pi t}{4}\right)h(t)=5+8cos(4πt). What is the average height of the object from t=0t=0t=0 to t=2t=2t=2 ?
The average value of a function is: