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    IBHardCalculus10–12

    What is the integral of 1x dx\frac{1}{x} \, dx?

    Qual é a integral de 1x dx\frac{1}{x} \, dx?

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    Solution

    ∫1x dx=ln⁡∣x∣+C\int \frac{1}{x} \, dx = \ln|x| + C. This is a fundamental integral rule.