Expression 2: "B" equals Start integral from 0.5 8 2 9 to 0.8 6 8 5, end integral, minus StartFraction, 9 Over 25 , EndFraction cosine left parenthesis, 11 "x" minus 1.7 , right parenthesis "d" "x"B=∫0.86850.5829−925cos11x−1.7dx
Expression 3: "C" equals Start integral from 0.8 7 3 6 to 0.9 2 9 7, end integral, minus StartFraction, 1 Over 40 , EndFraction sine left parenthesis, 56 "x" minus 1.8 , right parenthesis "d" "x"C=∫0.92970.8736−140sin56x−1.8dx