Oblicz a1 i a12 w ciągu danym wzorem an=4n - 9
a1= 4*1-9
a1=4-9
a1=-5
a12=4*12-9
a12=48-9
a12=39
Pozdrawiam serdecznie :)))
an=4n - 9
a₁=4 * 1 - 9 = 4 - 9 = -5
a₁₂= 4 * 12 - 9 = 48 - 9 = 39
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a1= 4*1-9
a1=4-9
a1=-5
a12=4*12-9
a12=48-9
a12=39
Pozdrawiam serdecznie :)))
an=4n - 9
a₁=4 * 1 - 9 = 4 - 9 = -5
a₁₂= 4 * 12 - 9 = 48 - 9 = 39