Question

i need help with this question, Find the 11th term in this sequence
1, -5, 25, -125,... and i found that the 11th term is -9,765,625 and now I need to know what the explicit formula is

Answer 1

this is a geometric sequence as the common ratio is constant

\(\large \begin{align} \color{black}{
\normalsize \text{formula for nth term is } \hspace{.33em}\\~\\
n^{th} ~~term=a\times r^{n-1} \hspace{.33em}\\~\\
\normalsize \text{where a = first term , r = common ratio, n =nth term } \hspace{.33em}\\~\\
}\end{align}\)

Answer 2

thanks man

Answer 3

\(\large \begin{align} \color{black}{

11^{th} ~~term=1\times (-5)^{11-1}=9765652 \hspace{.33em}\\~\\

}\end{align}\)


not that u have put negative symbol before 9765652

which is wrong

Answer 4

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