Cho hàm số \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9maalaaabaGaamiEaiabgUcaRiaaikdaaeaacaWG4bGaeyOeI0Ia % aGymaaaaaaa!3D48! y = \frac{{x + 2}}{{x - 1}}\). Vi phân của hàm số là:
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaeizaiaadM % hacqGH9aqpdaqadaqaamaalaaabaGaamiEaiabgUcaRiaaikdaaeaa % caWG4bGaeyOeI0IaaGymaaaaaiaawIcacaGLPaaadaahaaWcbeqaaO % Gamai4gkdiIcaacaqGKbGaamiEaiabg2da9iabgkHiTmaalaaabaGa % aG4maaqaamaabmaabaGaamiEaiabgkHiTiaaigdaaiaawIcacaGLPa % aadaahaaWcbeqaaiaaikdaaaaaaOGaaeizaiaadIhaaaa!4E80! {\rm{d}}y = {\left( {\frac{{x + 2}}{{x - 1}}} \right)^\prime }{\rm{d}}x = - \frac{3}{{{{\left( {x - 1} \right)}^2}}}{\rm{d}}x\)