I get confused when it is 'ok' to use the natural logarithm when integrating a function. As soon as I see a denominator, I am always tempted to simply go 'ln(denominator)/d denominator)' but this is clearly wrong....(adsbygoogle = window.adsbygoogle || []).push({});

Is it wrong in situations where you have a polynomial denominator? For example

Integral 1/(x^2 + 2x + 5) dx... would this be ln(x^2 + 2x + 5) / 2x + 2?

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# When to use 'ln' in integration?

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