\( b _ { n } = \frac { n ^ { 2 } - 5 n ^ { 3 } } { n + 4 } ; n \in N \rightarrow \)
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The sequence \( b_n = \frac{n^2 - 5n^3}{n + 4} \) can be explored for large values of \( n \). As \( n \) increases, the term \( -5n^3 \) dominates the numerator. Therefore, the sequence behaves like \(-5n^2\) when simplified, implying that the values are going to get quite large and negative as \( n \) increases! When calculating specific terms, remember to substitute \( n \) with natural numbers and watch out for common mistakes. A frequent pitfall is forgetting to correctly simplify the expression before plugging in the values. Try evaluating \( b_1, b_2, \) and \( b_3 \) to see how rapidly the values change. It's amazing how a few algebraic manipulations can lead to very different results!
