Evaluate- - 1 - x 2 -81 dx

Consider, I= ∫d xx^2+81 =∫d xx^2+9^2 =19tan^ 1(x9)+C ...

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Integration of Piecewise Continuous Functions

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Question

Evaluate: $\int \frac{1}{x^{2} + 81} d x$

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Solution

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