Mathematics · 2022
JEE Main · 27 July 2022, Shift 1 · Q27
Let f(x)=2 x^2-x-1 and S ={n ∈ Z:|f(n)| ≤ 800}. Then, the value of Σ_n ∈ S f(n) is equal to \ \ \ \.
Let $\displaystyle f(x)=2 x^2-x-1$ and $\displaystyle \mathrm{S}=\{n \in \mathbb{Z}:|f(n)| \leq 800\}$. Then, the value of $\displaystyle \sum_{n \in S} f(n)$ is equal to \_\_\_\_.
Official answer
10620
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JEE Main 2022 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.