Use a finite sum to estimate the average value of f on the given interval by partitioning the interval into four subintervals of equal length and evaluating f at the subinterval

midpoints.

f(t) = 11.5+ sin ² (nt) on [3,5]

The estimated average value of f(t) = 11.5+ sin ² (nt) on [3,5] is

(Simplify your answer.)

←

Aу

y=11.5+ sin ²(xt)

12.5-

M

12-

11.5-

13-

11-

3