Cho hàm số y = f(x) liên tục trên R và thoả mãn \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqi-CI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qqQ8frFve9Fve9 % Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaadaWdbaqaaiaadA % gadaqadaqaaiaadIhaaiaawIcacaGLPaaacaqGKbGaamiEaiabg2da % 9iaaisdacaWG4bWaaWbaaSqabeaacaaIZaaaaOGaeyOeI0IaaG4mai % aadIhadaahaaWcbeqaaiaaikdaaaGccqGHRaWkcaaIYaGaamiEaiab % gUcaRiaadoeaaSqabeqaniabgUIiYdaaaa!4875! \int {f\left( x \right){\rm{d}}x = 4{x^3} - 3{x^2} + 2x + C} \). Hàm số f(x) là:
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqi-CI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qqQ8frFve9Fve9 % Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaadaWdbaqaaiaadA % gadaqadaqaaiaadIhaaiaawIcacaGLPaaacaqGKbGaamiEaiabg2da % 9iaaisdacaWG4bWaaWbaaSqabeaacaaIZaaaaOGaeyOeI0IaaG4mai % aadIhadaahaaWcbeqaaiaaikdaaaGccqGHRaWkcaaIYaGaamiEaiab % gUcaRiaadoeaaSqabeqaniabgUIiYdaaaa!4875! \int {f\left( x \right){\rm{d}}x = 4{x^3} - 3{x^2} + 2x + C} \) nên
\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqi-CI8FfYJH8YrFfeuY-Hhbbf9v8qqaqFr0xc9pk0xbb % a9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qqQ8frFve9Fve9 % Ff0dmeaabaqaciGacaGaaeqabaWaaeaaeaaakeaacaWGMbWaaeWaae % aacaWG4baacaGLOaGaayzkaaGaeyypa0ZaaeWaaeaacaaI0aGaamiE % amaaCaaaleqabaGaaG4maaaakiabgkHiTiaaiodacaWG4bWaaWbaaS % qabeaacaaIYaaaaOGaey4kaSIaaGOmaiaadIhacqGHRaWkcaWGdbaa % caGLOaGaayzkaaWaaWbaaSqabeaakiadaIUHYaIOaaGaeyypa0JaaG % ymaiaaikdacaWG4bWaaWbaaSqabeaacaaIYaaaaOGaeyOeI0IaaGOn % aiaadIhacqGHRaWkcaaIYaaaaa!51FB! f\left( x \right) = {\left( {4{x^3} - 3{x^2} + 2x + C} \right)^\prime } = 12{x^2} - 6x + 2\)