Tìm vi phân của các hàm số \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9iGacohacaGGPbGaaiOBaiaaikdacaWG4bGaey4kaSIaci4Caiaa % cMgacaGGUbWaaWbaaSqabeaacaaIZaaaaOGaamiEaaaa!4234! y = \sin 2x + {\sin ^3}x\)
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamizaiaadM % hacqGH9aqpdaqadaqaaiaaikdaciGGJbGaai4BaiaacohacaaIYaGa % amiEaiabgUcaRiaaiodaciGGZbGaaiyAaiaac6gadaahaaWcbeqaai % aaikdaaaGccaWG4bGaci4yaiaac+gacaGGZbGaamiEaaGaayjkaiaa % wMcaaiaadsgacaWG4baaaa!4BCF! dy = \left( {2\cos 2x + 3{{\sin }^2}x\cos x} \right)dx\)