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arifmetik progressiya

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  • S15=120 a1=2 d=?
    d=16
  • A1=2 d=5 a10=?
    a10=47
  • A.P: 12 7 2... D va A15ni toping
    d=-5 a15=-58
  • a1=25 d=-2 Qaysi had 0 ga teng
    hech qaysi
  • a1=-15 d=4 qaysi hadi 101ga teng
    n=30
  • umumiy hadning formulasi?
    An=A1+(n-1)d
  • A.P: 6;10;14... Dastlabki 12ta hadning yig`indisini toping
    S12=336
  • Arifmetik progressiya ta`rifi
    Har bir hadi oldingisiga bir xil son ''d'' qo`shib hosil qilinadigan ketma-ketlik
  • a1=-4 a16=26 n=16 s16=?
    s16=176
  • Yig`indining formulasi
    Sn=n/2(A1+An)
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