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a fost răspuns

calculati media aritmetica a numerelor a=1/2+1/3+1/4+...+1/2011 si b=1/2+2/3+3/4+...+2010/2011

Răspuns :

a=1/2+1/3+1/4+....+1/2011
b=1/2+2/3+3/4+.....+2010/2011 (+)

a+b=(1/2+1/2)+(1/3+2/3)+(1/4+3/4)+....+(1/2011+2010/2011)
a+b=2/2+3/3+4/4+....+2011/2011
a+b=1+1+1+.....+1 ( de 2010 ori)
a+b=2010

Ma= (a+b):2
Ma=2010:2
Ma=1005

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