Expression 5: "L" left parenthesis, "x" , right parenthesis equals "h" Start sum from "k" equals 1 to ceil left parenthesis, StartFraction, "x" Over "h" , EndFraction , right parenthesis , end sum, "f" left parenthesis, "h" "k" , right parenthesisLx=hceilxh∑k=1fhk
5
Expression 6: "I" left parenthesis, "x" , right parenthesis equals Start integral from 0 to "x" , end integral, "f" left parenthesis, "t" , right parenthesis "d" "t"Ix=∫x0ftdt
6
Expression 7: StartAbsoluteValue, "I" left parenthesis, "x" , right parenthesis minus "F" left parenthesis, "x" , right parenthesis , EndAbsoluteValueIx−Fx
7
Expression 8: StartAbsoluteValue, "I" left parenthesis, "x" , right parenthesis minus "L" left parenthesis, "x" , right parenthesis , EndAbsoluteValueIx−Lx