El-BAHITH REVIEW Number 05 _ University Of Ouargla Algeria
Annual refereed journal of applied reserch in economic, commercial and managment sciences
Annual refereed journal of applied reserch in economic, commercial and managment sciences
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93<br />
83<br />
2002 1990<br />
y = -0.5372*t 4 + 10.612*t 3 - 71.572*t2 + 268.74*t + 860.23 ; R 2 = 0.5216…..15<br />
3 3<br />
3696<br />
2002<br />
5087<br />
33<br />
6504<br />
1.8<br />
1700<br />
6.81<br />
1991<br />
2<br />
15<br />
- 2.15*t 3 + 31.84*t 2 – 142.14*t + 268.74<br />
y = -5.5773*t 4 + 129.36*t 3 - 918.55*t 2 + 2388.9*t + 1944.9 ; R 2 = 0.8699…..16<br />
3<br />
5026<br />
2002<br />
7242<br />
23<br />
3<br />
7197 1991<br />
1.4<br />
1659<br />
4.<strong>05</strong><br />
16<br />
- 16.73*t 3 + 388.08*t 2 – 1837.1*t + 1944.9<br />
y = -18.401*t 3 + 282.49*t 2 - 603.98*t + 5196 ; R 2 = 0.9491…..17<br />
3<br />
18972<br />
2002<br />
21445<br />
11<br />
23624<br />
1.2<br />
2340<br />
2.1<br />
4<br />
1991<br />
17<br />
- 55.2*t 2 + 564.98*t + 603.98<br />
y = 9.8671*t 2 + 451.62*t + 17975 ; R 2 = 0.8008…..18<br />
3<br />
26286<br />
2002<br />
30716<br />
9<br />
35126<br />
1.3<br />
2769<br />
2.7<br />
5<br />
1991<br />
18<br />
19.73*t + 451.62<br />
y = 756.35*t + 25799 ; R 2 = 0.9701…..19<br />
756.35<br />
19