aplici relatia : v1= (c1-c,2)/(t2-t1)=(0,1-c2)/50....................calculeaza c2
v2= (c1-c3)./(t3-t1)=0,05 / t3..........................calculeaza t3
v3= (c1-c4)/(t4-t1)=0,075/200.............................calculeaza
la ultimul pct. nu se vede bine !
