What is taylor ln(x^2+1) ?

The answer to taylor ln(x^2+1) is x^2-1/2 x^4+1/3 x^6-1/4 x^8+1/5 x^{10}+\ldots

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taylor ln(x^2+1)

taylor

ln (x^{2} + 1)

x^{2} - \frac{1}{2} x^{4} + \frac{1}{3} x^{6} - \frac{1}{4} x^{8} + \frac{1}{5} x^{10} + \dots

Solution steps

Apply the Taylor Formula

= 0 + \frac{\frac{d}{d x} ( ln ( x ^{2} + 1 ) ) ( 0 )}{1 !} x + \frac{\frac{d ^{2}}{d x ^{2}} ( ln ( x ^{2} + 1 ) ) ( 0 )}{2 !} x^{2} + \frac{\frac{d ^{3}}{d x ^{3}} ( ln ( x ^{2} + 1 ) ) ( 0 )}{3 !} x^{3} + \dots

Evaluate Derivatives

= 0 + \frac{0}{1 !} x + \frac{2}{2 !} x^{2} + \frac{0}{3 !} x^{3} + \frac{- 12}{4 !} x^{4} + \frac{0}{5 !} x^{5} + \frac{240}{6 !} x^{6} + \frac{0}{7 !} x^{7} + \frac{- 10080}{8 !} x^{8} + \frac{0}{9 !} x^{9} + \frac{725760}{10 !} x^{10} + \dots

Refine

= x^{2} - \frac{1}{2} x^{4} + \frac{1}{3} x^{6} - \frac{1}{4} x^{8} + \frac{1}{5} x^{10} + \dots

- 6 t (5 t^{3} - 1)^{7}

x \to - 3 lim (x^{2} - 5)

x \to 2 - lim (\frac{2 x}{x - 2})

x \to c + lim (g (x))

\frac{d}{d x} (\frac{( 1 - 4 x )}{1 + 4 x})

What is taylor ln(x^2+1) ?
The answer to taylor ln(x^2+1) is x^2-1/2 x^4+1/3 x^6-1/4 x^8+1/5 x^{10}+\ldots