`E v a l u a t e:int(x^4+x^2+1)/(x^2-x+1)dxdot`

Explanation

`I=int frac{x^{2}+1}{x^{4}+1} d x`
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I=int frac{x^{2}(1+frac{1}{x^{2}})}{x^{2}(x^{2}+frac{1}{x^{2}})} d x`
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I=int frac{(1+frac{1}{x^{2}}) d x}{(x^{2}+frac{1}{x^{2}})}`
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