Expression 1: natural log left parenthesis, 1.5 , right parenthesis plus total left parenthesis, left bracket, 2 , 3 , ...9 9 , right bracket times ln left parenthesis, StartFraction, left bracket, 2.5 , 3.5 , ...9 9.5 , right bracket Over left bracket, 1.5 , 2.5 , ... , 98.5 , right bracket , EndFraction , right parenthesis , right parenthesis plus 100natural log left parenthesis, StartFraction, 100 Over 99.5 , EndFraction , right parenthesisln1.5+total2,3,...99·ln2.5,3.5,...99.51.5,2.5,...,98.5+100ln10099.5