12 T1 T2 T3
x = ------------ * ( --------- + ---------- + ------------) - 3* 31
30 + 31 8 10 12
dane :
T1 = 114,5
T2 = 148,5
T3 = 202
T1, T2, T3 we wzorze są do kwadratu
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x=12/61 * (t1*15/120 + t2*12/120 + t3*10/120) - 93 =
=12/61 * (t1*15+t2*12+t3*10) / 120 - 93 =
= (t1*15+t2*12+t3*10)/(61*10) - 93 =
= (13110,25*15+22052,25*12+40804*10) / 610 - 93 =
= (196653,75 + 264627 + 408040) / 610 - 93 =
= 869320,75 / 610 - 93 =~ 1425,12 - 93 = 1332,12
przyjęto zaokraglenie do dwóch miejsc po przecinku