Mathematics

Mathematics

Problem

The limit lim⁡n→∞∑i=1n(sin⁡(1+bin))⋅bn\lim_{n\to\infty}\sum_{i=1}^{n}\bigl(\sin\bigl(1+\tfrac{b i}{n}\bigr)\bigr)\cdot\tfrac{b}{n} equals ∫14sin⁡x dx.\displaystyle \int_{1}^{4}\sin x\,dx. Determine the value of bb.

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