Dane jest
a
oblicz
r
an=4*1=4
a₁=4
a₁₀=10
a₁₀=a₁+9r
10=4+9r
r=⅔
a₂₀=a₁₀+10r
a₂₀=10+10*(⅔)
a₂₀=16⅔
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an=4*1=4
a₁=4
a₁₀=10
a₁₀=a₁+9r
10=4+9r
r=⅔
a₂₀=a₁₀+10r
a₂₀=10+10*(⅔)
a₂₀=16⅔