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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: cho s=3/1.4+3/4.7+3/7.10+…3/40.43+3/43.46.hãy chứng tỏ rằng s bé hơn1

Toán Lớp 6: cho s=3/1.4+3/4.7+3/7.10+…3/40.43+3/43.46.hãy chứng tỏ rằng s bé hơn1

Comments ( 2 )

  1. Giải đáp:
    Hoàng gửi bạn
     

    toan-lop-6-cho-s-3-1-4-3-4-7-3-7-10-3-40-43-3-43-46-hay-chung-to-rang-s-be-hon1

  2. Lời giải và giải thích chi tiết:
    S=3/1.4+3/4.7+3/7.10+…3/40.43+3/43.46
    =1-1/4+1/4-1/7+1/7-1/10+…+1/10-1/43+1/43-1/46
    =1-1/46
    Vì 1-1/46<1
    ⇒3/1.4+3/4.7+3/7.10+…3/40.43+3/43.46<1
          Gửi bạn!!!!!
     

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222-9+11+12:2*14+14 = ? ( )

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