= Which means that, (1.058 + 5.35 ) 2.6 = −74.636 − 34.67 1 4 (9.27+7.49 ) 1.1 In this example F = -1.1 r A? 9.27+7.49b= F? z1.1= = Which means that 1 = 0.048 − 0.445 (9.27 + 7.49 ) 4.1 25