Question :
Find the formula for the 19th term of the sequence in which a1 = 9 and the common ratio is 6.
Answer :
From the question we know that :
n = 19th
a₁ = 9
r = 6
General Formulas To find any term of a geometric sequence:
\(a_{n}=a_{1} \cdot r^{(n-1)}\)
The formula for the 19th term of the sequence :
\(a_{19}=9 \cdot 6^{(19-1)}\)
\(a_{19}=9 \cdot 6^{18}\)
