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11 cards from this deck
A set of objects (usually numbers) listed in order
Sequence where difference between consecutive terms is constant (called common difference)
ddd
aaa
Tn=a+(n−1)dT_n = a + (n-1)dTn=a+(n−1)d
Term at position nnn
d=Tn−Tn−1d = T_n - T_{n-1}d=Tn−Tn−1
Show Tn−Tn−1T_n - T_{n-1}Tn−Tn−1 is constant
Natural number
a,a+d,a+2d,a+3d,...a, a+d, a+2d, a+3d, ...a,a+d,a+2d,a+3d,...
aaa (first term)
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