Wyznacz pierwszy wyraz ciągu geometrycznego mając dane aq=125 oraz q=5
an 125 5^3 1 1
q=5, a_7=125 to a1 -------------- = -------------- = ------- = ------- = -----
qn-1 5^6 5^6 5^3 125
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an 125 5^3 1 1
q=5, a_7=125 to a1 -------------- = -------------- = ------- = ------- = -----
qn-1 5^6 5^6 5^3 125