Tính đạo hàm của hàm số sau \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9iGacohacaGGPbGaaiOBamaaCaaaleqabaGaaGOmaaaakiaacIca % caaIZaGaamiEaiabgUcaRiaaigdacaGGPaaaaa!4073! y = {\sin ^2}(3x + 1)\)
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiaacE % cacqGH9aqpcaaIYaGaci4CaiaacMgacaGGUbGaaiikaiaaiodacaWG % 4bGaey4kaSIaaGymaiaacMcacaGGUaWaamWaaeaaciGGZbGaaiyAai % aac6gacaGGOaGaaG4maiaadIhacqGHRaWkcaaIXaGaaiykaaGaay5w % aiaaw2faamaaCaaaleqabaGaai4jaaaakiabg2da9iaaikdaciGGZb % GaaiyAaiaac6gacaGGOaGaaG4maiaadIhacqGHRaWkcaaIXaGaaiyk % aiaac6cacaaIZaGaci4yaiaac+gacaGGZbGaaiikaiaaiodacaWG4b % Gaey4kaSIaaGymaiaacMcaaaa!5E31! y' = 2\sin (3x + 1).{[sin (3x + 1)]'} = 2\sin (3x + 1).3\cos (3x + 1)\) = 3sin(6x + 2)