For each function, compute the two indicated approximations of the net area under the curve. Show your calculation for each Ax,Ah, At {2 for each part). Write out each approximation symbolically using sigma notation, with index 1', and then compute it using your TI-36XPro, rounding to 3 decimal places. 3. f(x) = 0.44; , over [3,9] using left endpoints for n = 6 and also for 3? =12 , {50, L5 and L12] . it}? b. RU?) : 22 sm[?] over [12,18] using midpoints for n = 8 and also for n =80, (so, 114:"g and M80]