• arifmetik progressiya
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  • Arifmetik progressiya ta`rifi
    Har bir hadi oldingisiga bir xil son ''d'' qo`shib hosil qilinadigan ketma-ketlik
  • umumiy hadning formulasi?
    An=A1+(n-1)d
  • Yig`indining formulasi
    Sn=n/2(A1+An)
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