[IMG]file:///C:/Users/ff/AppData/Local/Temp/msohtmlclip1/01/clip_image002.gif[/IMG]=[IMG]file:///C:/Users/ff/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif[/IMG] = [IMG]file:///C:/Users/ff/AppData/Local/Temp/msohtmlclip1/01/clip_image006.gif[/IMG]
بالمطابقة نجد
[IMG]file:///C:/Users/ff/AppData/Local/Temp/msohtmlclip1/01/clip_image008.gif[/IMG]
a=2 /-2a+b=-5 è-4+b=-5 èb=-1
شعاع الانسحاب هو
V(-a,b) è V(-2,-1)
بالتوفيق