Question

cati termeni au urmatoarele ecuatii:
a) 3+5+7+.....+2011
b) 2+4+6+.....+2012?
va rog mulllttt

Answer 1

   
[tex]\displaystyle a) ~~~ n= \frac{2011-3}{2}+1 = \frac{2008}{2}+1 = =1004+1 = \boxed{1005\;termeni} \\ \\ a) ~~~ n= \frac{2012-2}{2}+1 = \frac{2010}{2}+1 = =1005+1 = \boxed{1006\;termeni} [/tex]