The value of -44 -1 - x - x2 - -1 - x - x2 dx is

∫_4^4(√(1+x+x^2) √(1 x+x^2) )dx For an integration ∫_a^af(x)dx is always zero. ...

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Evaluation of a Determinant

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The value of $4 \int 4 (\sqrt{1 + x + x^{2}} - \sqrt{1 - x + x^{2}}) d x$ is

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