Cho hàm số \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9iGacohacaGGPbGaaiOBaiaadIhacqGHsislcaaIZaGaci4yaiaa % c+gacaGGZbGaamiEaaaa!4147! y = \sin x - 3\cos x\). Vi phân của hàm số là:
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaeizaiaadM % hacqGH9aqpdaqadaqaaiGacohacaGGPbGaaiOBaiaadIhacqGHsisl % caaIZaGaci4yaiaac+gacaGGZbGaamiEaaGaayjkaiaawMcaamaaCa % aaleqabaGccWaGGBOmGikaaiaabsgacaWG4bGaeyypa0ZaaeWaaeaa % ciGGJbGaai4BaiaacohacaWG4bGaey4kaSIaaG4maiGacohacaGGPb % GaaiOBaiaadIhaaiaawIcacaGLPaaacaqGKbGaamiEaaaa!5671! {\rm{d}}y = {\left( {\sin x - 3\cos x} \right)^\prime }{\rm{d}}x = \left( {\cos x + 3\sin x} \right){\rm{d}}x\)