JEE Main & Advanced Mathematics Indefinite Integrals Question Bank Integration of Rational Function by Using Partial Fractions

  • question_answer
    \[\int_{{}}^{{}}{\frac{dx}{(x-{{x}^{2}})}=}\]           [Roorkee 1982]

    A)                 \[\log x-\log (1-x)+c\]

    B)                 \[\log (1-{{x}^{2}})+c\]

    C)                 \[-\log x+\log (1-x)+c\]

    D)                 \[\log (x-{{x}^{2}})+c\]

    Correct Answer: A

    Solution :

                    \[\int_{{}}^{{}}{\frac{dx}{(x-{{x}^{2}})}=\int_{{}}^{{}}{\left( \frac{1}{x}+\frac{1}{1-x} \right)}\text{ }dx=\log x-\log (1-x)+c}\].


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