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y<br />
4<br />
3<br />
(C )<br />
1<br />
(∆)<br />
2<br />
( D)<br />
1<br />
→<br />
j<br />
-4<br />
-3<br />
-2<br />
-1<br />
0 →<br />
i 1<br />
2 3 4<br />
x<br />
-1<br />
-2<br />
-3<br />
F1<br />
-4<br />
-5<br />
الصفحة 5 من 5