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Find the Indacated term for the geometic sequence with the tirst term \( a 1 \), and the common ratio \( r \) find as when \( a 1=4, r=3 \)

Ask by Ward Lee. in the United States
Dec 14,2024

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To find the \( n \)-th term of a geometric sequence with \( a_1 = 4 \) and \( r = 3 \), use the formula \( a_n = 4 \cdot 3^{(n-1)} \). For example, the 5th term is \( 324 \).

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Mind Expander

To find the indicated term of a geometric sequence, you can use the formula for the \( n \)-th term, which is given by \( a_n = a_1 \cdot r^{n-1} \). In your case, with \( a_1 = 4 \) and \( r = 3 \), just plug in the values. For example, if you want to find the 5th term (\( n = 5 \)), it would be \( a_5 = 4 \cdot 3^{5-1} = 4 \cdot 3^4 = 4 \cdot 81 = 324 \). Isn’t it cool how just a simple formula can help you unlock the secrets of the sequence? Now you can calculate any term you want as long as you know the first term and the common ratio!

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