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Câu hỏi: Khẳng định nào sau đây là đúng?
A. ${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=-f'\left( x \right).$
B. ${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=f'\left( x \right).$
C. ${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=-f\left( x \right).$
D. ${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=f\left( x \right).$
A. ${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=-f'\left( x \right).$
B. ${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=f'\left( x \right).$
C. ${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=-f\left( x \right).$
D. ${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=f\left( x \right).$
Cách giải:
${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=f\left( x \right)$
${{\left( \int\limits_{{}}^{{}}{f\left( x \right)dx} \right)}^{\prime }}=f\left( x \right)$
Đáp án D.