frac{m - n}{m + n} + frac{1}{3}left( frac{m - | vedclass

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(D) We use the logarithmic series expansion: $\frac{1}{2}\log_e\left( \frac{1+x}{1-x} \right) = x + \frac{x^3}{3} + \frac{x^5}{5} + \dots$ where $x =

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$\frac{1}{2}\log_e\left( \frac{m}{n} \right)$

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(D) We use the logarithmic series expansion: $\frac{1}{2}\log_e\left( \frac{1+x}{1-x} \right) = x + \frac{x^3}{3} + \frac{x^5}{5} + \dots$ where $x = \frac{m-n}{m+n}$.Substituting $x$ into the formula:$= \frac{1}{2}\log_e\left( \frac{1 + \frac{m-n}{m+n}}{1 - \frac{m-n}{m+n}} \right)$$= \frac{1}{2}\log_e\left( \frac{\frac{m+n+m-n}{m+n}}{\frac{m+n-(m-n)}{m+n}} \right)$$= \frac{1}{2}\log_e\left( \frac{2m}{2n} \right)$$= \frac{1}{2}\log_e\left( \frac{m}{n} \right)$.

$\frac{m - n}{m + n} + \frac{1}{3}\left( \frac{m - n}{m + n} \right)^3 + \frac{1}{5}\left( \frac{m - n}{m + n} \right)^5 + \dots \infty = $

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