Déterminer la valeur du Dl "j" ...

ITa = 0.204
ITb = 0.034
ITc = 0.181

j = ( ITa - ITb + ITc ) / 2 = 0.176
donc
d = ITa - j = 0.204 - 0.176
et donc
e = ITc - j = 0.181 - 0.176

j = (0.204 +0.034 +0.181 ) / 2 =