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Iluminati59
a fost răspuns

imi poate spune cineva cum se rezolva ex:(1/2+1/6+.......+1/9900)​

Răspuns :

Lucasela

(1/2+1/6+.......+1/9900)​

=1/(1·2) +1/(2·3) + 1/(3·4) +....+1/(99·100)

=1/1-1/2+1/2-1/3-1/3-1/4+......+1/99-1/100

=1/1-1/100

=99/100
Salut,

(1/2+1/6+...+1/9900)

1/(1x2)+1/(2x3)+1/(3x4)+...+1/(99x100)

1/1-1/2+1/2-1/3-1/3-1/4+....+1/99-1/100

1/1-1/100

=99/100

BY 7646