If ⨍ (x)=x21.2-x32.3+x43.4-x54.5+…∞ then ⨍ 1(x)=

⨍ (x)=x21.2-x32.3+x43.4-…… ⨍ 1(x)=x1-x22+x33-…… =log(1+x)

⨍ (x)=x21.2-x32.3+x43.4-…… ⨍ 1(x)=x1-x22+x33-…… =log(1+x)

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If $⨍ (x)= \frac{x^{2}}{1.2} - \frac{x^{3}}{2.3} + \frac{x^{4}}{3.4} - \frac{x^{5}}{4.5} {+…∞ then ⨍}^{1} (x)=$

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$\log_{e} (1 - x)$

$\log_{e} (\frac{1 + x}{1 - x})$

$\log_{e} (1 + x)$

$\log_{e} x$

answer is C.

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$⨍ (x)= \frac{x^{2}}{1.2} - \frac{x^{3}}{2.3} + \frac{x^{4}}{3.4} -…… ⨍^{1} (x)= \frac{x}{1} - \frac{x^{2}}{2} + \frac{x^{3}}{3} -…… = \log (1 + x)$

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