If $y = 1 - \frac{x}{2} + \frac{x^2}{4} - \dots$, th… |

Q9Short4 marks2022 · Annual

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y = 1 - \frac{x}{2} + \frac{x^2}{4} - \dots\text{,}

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Expand using the Binomial Theorem, and use appropriate techniques to simplify the expression.

Find an approximate value using the Binomial Theorem.