Dany jest ciąg aretmeyczny o wyrazie ogólnym an=-3n-5 Różnica tego ciagu jest równa.
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an = -3n - 5
a1 = -3 * 1 - 5 = - 3 - 5 = -8
a2 = -3 * 2 - 5 = -6 - 5 = -11
r = a2 - a1 = -11 - (-8) = -11 + 8 = -3 -------- odpowiedx
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an = -3n - 5
a1 = -3 * 1 - 5 = - 3 - 5 = -8
a2 = -3 * 2 - 5 = -6 - 5 = -11
r = a2 - a1 = -11 - (-8) = -11 + 8 = -3 -------- odpowiedx