u can do it by mathematical induction assume it fr n-1 n prove it for n
5 Answers
°ღ•๓ÑÏ…Î
·2009-04-28 10:19:28
prove it for n=0,1,2,3..............
then u can say itz ture for .......any n
Celestine preetham
·2009-04-28 21:48:17
u can prove this only by induction (this is ncert misscellaneous Q )
Gone..
·2009-04-29 06:28:32
ya thanks guys,, it was frm r scl book... even r teacher proved it wid induction :)