أثبت أن ظا^-1 (1) + ظا^-1 (2) + ظا^-1 (3)=pi [الأرشيف] - منتديات الرياضيات العربية

menalous2006

25-06-2006, 12:31 AM

اثبت أن

tan^{-1} (1) + tan^{-1} (2) + tan^{-1} (3) =\pi

345

08-07-2006, 04:39 PM

http://img263.imageshack.us/img263/8361/271144935ly.jpg

345

08-07-2006, 04:44 PM

http://img255.imageshack.us/img255/9743/612087097vc.jpg

omar

16-09-2006, 07:09 PM

http://img249.imageshack.us/img249/9329/arctan6gg.jpg