👤
a fost răspuns

1/2+1/2*3+1/2*5....+1/2*2011.

1/2 inseamna 1 supra 2
si * inseamna inmultit

HELP ME PLEASE !!!

Răspuns :

Alexandralavi
1/2+1/2*3+1/2*5+...+1/2*2011= 1/2+3/2+5/2+...+2011/2 2011/2+2009/2+2007/2+...+1/2 -------------(tragi bara pe dedesubt) Rezultat:2012/2+2012/2+2012/2+...2012/2 -----------------------------------------2012:2=1006 termeni 2S=2012/2*1006 2S=1012036 S=1012036: 2 S=506018

Alte intrebari