Cho hàm số \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9iaadIhadaahaaWcbeqaaiaaiodaaaGccqGHsislcaaI5aGaamiE % amaaCaaaleqabaGaaGOmaaaakiabgUcaRiaaigdacaaIYaGaamiEai % abgkHiTiaaiwdaaaa!428B! y = {x^3} - 9{x^2} + 12x - 5\). Vi phân của hàm số là:
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaeizaiaadM % hacqGH9aqpdaqadaqaaiaadIhadaahaaWcbeqaaiaaiodaaaGccqGH % sislcaaI5aGaamiEamaaCaaaleqabaGaaGOmaaaakiabgUcaRiaaig % dacaaIYaGaamiEaiabgkHiTiaaiwdaaiaawIcacaGLPaaadaahaaWc % beqaaOGamai4gkdiIcaacaqGKbGaamiEaiabg2da9maabmaabaGaaG % 4maiaadIhadaahaaWcbeqaaiaaikdaaaGccqGHsislcaaIXaGaaGio % aiaadIhacqGHRaWkcaaIXaGaaGOmaaGaayjkaiaawMcaaiaabsgaca % WG4baaaa!56DE! {\rm{d}}y = {\left( {{x^3} - 9{x^2} + 12x - 5} \right)^\prime }{\rm{d}}x = \left( {3{x^2} - 18x + 12} \right){\rm{d}}x\)