evaluate integral of { sqrt{1+x^2} } / {x^2} and integral of (e^(ax) ) cosbx using integration by parts

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evaluate integral of { sqrt{1+(x^2)} } / {x^2} using integration by parts integral of (e^(ax) ) cosbx using integration by parts take sqrt{1+(x^2)}as the first function and {1/ (x^2)} as the second function then apply integration by parts integration formula: integration
formulaproblem2 integral of (e^(ax) ) cosbx using integration by parts Take the question as I take cosbx as the first function or vice versa apply integration by parts method to I simplify and in the second integral take sin bx as the first function and again apply integration by parts method simplify, the last integral that you get will the same as I. Change the integral to I and solve the equation for I.
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