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am nevoie urgent! dau coroana​

Am Nevoie Urgent Dau Coroana class=

Răspuns :

a=1/2+1/3+1/4+.....+1/2015

b=1/2+2/3+3/4+....+2014/2015

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a+b=1/2+1/2+1/3+2/3+....+1/2015+2014/2015

a+b=1+1+....+1 de 2014 ori

a+b=2014

mₐ=(a+b)/2

mₐ=2014/2

mₐ=1007