Cho hàm số \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9maalaaabaGaamiEaaqaamaakaaabaGaaGinaiabgkHiTiaadIha % daahaaWcbeqaaabaaaaaaaaapeGaaGOmaaaaa8aabeaaaaGccaGGUa % aaaa!3D91! y = \frac{x}{{\sqrt {4 - {x^2}} }};\) y’(0) bằng:
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGabmyEayaafa % Gaeyypa0ZaaSaaaeaadaGcaaqaaiaaisdacqGHsislcaWG4bWaaWba % aSqabeaaqaaaaaaaaaWdbiaaikdaaaaapaqabaGccqGHsislcaWG4b % WaaSaaaeaacqGHsislcaWG4baabaWaaOaaaeaacaaI0aGaeyOeI0Ia % amiEamaaCaaaleqabaWdbiaaikdaaaaapaqabaaaaaGcbaWaaeWaae % aadaGcaaqaaiaaisdacqGHsislcaWG4bWaaWbaaSqabeaapeGaaGOm % aaaaa8aabeaaaOGaayjkaiaawMcaamaaCaaaleqabaWdbiaaikdaaa % aaaOWdaiabg2da9maalaaabaGaaGinaaqaamaabmaabaWaaOaaaeaa % caaI0aGaeyOeI0IaamiEamaaCaaaleqabaWdbiaaikdaaaaapaqaba % aakiaawIcacaGLPaaadaahaaWcbeqaa8qacaaIZaaaaaaaaaa!5222! y' = \frac{{\sqrt {4 - {x^2}} - x\frac{{ - x}}{{\sqrt {4 - {x^2}} }}}}{{{{\left( {\sqrt {4 - {x^2}} } \right)}^2}}} = \frac{4}{{{{\left( {\sqrt {4 - {x^2}} } \right)}^3}}}\)
\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaaccaGae8N0H4 % TabmyEayaafaWaaeWaaeaacaaIWaaacaGLOaGaayzkaaGaeyypa0Za % aSaaaeaacaaIXaaabaGaaGOmaaaaaaa!3E2E! \Rightarrow y'\left( 0 \right) = \frac{1}{2}\)