Cho hàm số \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9iaadAgadaqadaqaaiaadIhaaiaawIcacaGLPaaacqGH9aqpcaaI % YaGaci4CaiaacMgacaGGUbWaaOaaaeaacaWG4baaleqaaaaa!411B! y = f\left( x \right) = 2\sin \sqrt x \). Đạo hàm của hàm số y là:
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiaacE % cacqGH9aqpcaaIYaGaaiOlamaabmaabaWaaOaaaeaacaWG4baaleqa % aaGccaGLOaGaayzkaaGaai4jaiaac6caciGGJbGaai4Baiaacohada % GcaaqaaiaadIhaaSqabaGccqGH9aqpdaWcaaqaaiaaigdaaeaadaGc % aaqaaiaadIhaaSqabaaaaOGaaiOlaiGacogacaGGVbGaai4Camaaka % aabaGaamiEaaWcbeaaaaa!499E! y' = 2.\left( {\sqrt x } \right)'.\cos \sqrt x = \frac{1}{{\sqrt x }}.\cos \sqrt x \)