Hàm số \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9maalaaabaGaci4CaiaacMgacaGGUbGaaiiEaaqaaiaadIhaaaaa % aa!3CD9! y = \frac{{{\mathop{\rm sinx}\nolimits} }}{x}\)có đạo hàm là:
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiaacE % cacqGH9aqpdaWcaaqaamaabmaabaGaci4CaiaacMgacaGGUbGaamiE % aaGaayjkaiaawMcaaiaacEcacaGGUaGaaiiEaiabgkHiTiGacohaca % GGPbGaaiOBaiaacIhacaGGUaGaaiiEaiaacEcaaeaacaWG4bWaaWba % aSqabeaacaaIYaaaaaaakiabg2da9maalaaabaGaamiEaiaac6caci % GGJbGaai4BaiaacohacaWG4bGaeyOeI0Iaci4CaiaacMgacaGGUbGa % amiEaaqaaiaadIhadaahaaWcbeqaaiaaikdaaaaaaaaa!56B1! y' = \frac{{\left( {\sin x} \right)'.x - {\mathop{\rm sinx}\nolimits} .x'}}{{{x^2}}} = \frac{{x.\cos x - \sin x}}{{{x^2}}}\)