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Using the binomial series obtain a power-series expansion for arcsin x

Integrate the binomial series for (1-x^2)^{-\frac{1}{2}} to obtain the power-series expansion

    \[ \arcsin x = x + \sum_{n=1}^{\infty} \frac{1 \cdot 3 \cdot 5 \cdots (2n-1)}{2 \cdot 4 \cdot 6 \cdots (2n)} \frac{x^{2n+1}}{2n+1}, \qquad (|x| < 1). \]


Incomplete.

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