Toán Lớp 6: H= 1+2-3-4+5-6-7-8+9+..+2018-2019-2020+2021-2022
G=1/3+1/6+1/10+1/15+…….+1/45
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Toán Lớp 6: H= 1+2-3-4+5-6-7-8+9+..+2018-2019-2020+2021-2022
G=1/3+1/6+1/10+1/15+…….+1/45
Comments ( 2 )
Giải đáp:
Lời giải và giải thích chi tiết:
h <
g >
H=1 + 2 – 3 – 4 + 5 + 6 – 7 – 8 +……………………….+ 2018 – 2019 – 2020 + 2021 + 2022
H=(1 + 2 – 3 – 4) +(5+6-7-8)+…………………….+ (2017 + 2018 – 2019 – 2020) + 2021 + 2022
H=(-4) +(-4)+…………………………….+ (-4) + 2021 + 2022(có 505 số -4)
H=(-4) . 505 + 2021 + 2022
H=(-2020) + 2021 + 2022
H=2023
G=1/3 + 1/6 + 1/10 + 1/15 + ………………………… + 1/45
G=2/6 + 2/12 + 2/20 + 2/30 + ………………………… + 2/90
G=2.(1/6 + 1/12 + 1/20 + 1/30 + ……………………… + 1/90)
G=2.((1)/2.3 + 1/3.4 + 1/4.5 + 1/5.6 + ……………………………. + 1/9.10)
G=2.(1/2 – 1/3 + 1/3 – 1/4 + 1/4 – 1/5 + 1/5 – 1/6 + 1/6 + ……………………………..+1/8 – 1/9 + 1/9 – 1/10)
G=2.(1/2-1/10)
G=2.2/5
G=4/5
@Ki ng