What is (d^2)/(dx^2)((x^2-1)/(x^2+1)) ?

The answer to (d^2)/(dx^2)((x^2-1)/(x^2+1)) is (4(-3x^2+1))/((x^2+1)^3)

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(d^2)/(dx^2)((x^2-1)/(x^2+1))

\frac{d ^{2}}{d x ^{2}} (\frac{x ^{2} - 1}{x ^{2} + 1})

\frac{4 ( - 3 x ^{2} + 1 )}{( x ^{2} + 1 ) ^{3}}

Solution steps

\frac{d ^{2}}{d x ^{2}} (\frac{x ^{2} - 1}{x ^{2} + 1})

\frac{d}{d x} (\frac{x ^{2} - 1}{x ^{2} + 1}) = \frac{4 x}{( x ^{2} + 1 ) ^{2}}

= \frac{d}{d x} (\frac{4 x}{( x ^{2} + 1 ) ^{2}})

\frac{d}{d x} (\frac{4 x}{( x ^{2} + 1 ) ^{2}}) = \frac{4 ( - 3 x ^{2} + 1 )}{( x ^{2} + 1 ) ^{3}}

= \frac{4 ( - 3 x ^{2} + 1 )}{( x ^{2} + 1 ) ^{3}}

\frac{d}{d x} (\frac{1}{π} c x^{2} + ln (cos^{3} (x)))

\int_{1}^{9} \frac{1}{6 - x} d x

\int \frac{1}{x} 1 + x^{2} d x

f (x) = x^{3} - 2 x + 2, (2, 6)

What is (d^2)/(dx^2)((x^2-1)/(x^2+1)) ?
The answer to (d^2)/(dx^2)((x^2-1)/(x^2+1)) is (4(-3x^2+1))/((x^2+1)^3)