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Calculus
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The infinite series \[{\text{f}}\left( {\text{x}} \right) = {\text{x}} - \frac{{{{\text{x}}^3}}}{{3!}} + \frac{{{{\text{x}}^5}}}{{5!}} - \frac{{{{\text{x}}^7}}}{{7!}}\,...\,\infty \]       converges to

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Correct Answer: Option B
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