& gt1+1/2+1/3+1/4+( 1/6+1/6)+(1/9+1/9+1/9)+(1/12+1/12+1/12)
=1+1/2+ 1/3+1/4+1/3+1/3+1/4
=3
a = 1+1/2+1/3+1/4 +...+1/11+1/12
& lt1+1/2+(1/3+1/3+1/3)+(1/6+1/6+1 /6)+(1/9+1/9+1/9+1/9)
=1+1/2+1+1/2+4/9
=3+4/9
La parte entera de a es 3.
Respuestas Doradas de Matemáticas Youdao PDF
a = 1+1/2+1/3+1/4+...+1/11+1/12