Approximate the area of the region bounded by the graph of f(t)= cos (t/2-1/8) and the t-axis on [0,x] with n=4 subintervals. Use the midpoint of each subinterval to determine the height of each rectangle (see figure). The approximate area of the region is (Round to two decimal places as needed.) www f(t) = cos(t/2-x/8) KIN 24 Q Q S

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