Tích phân \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaa8qCaeaada % WcaaqaaiaaigdaaeaacaaIYaGaaeiEaiabgUcaRiaaiwdaaaGaaeiz % aiaadIhaaSqaaiaaicdaaeaacaaIXaaaniabgUIiYdaaaa!3FD9! \int\limits_0^1 {\frac{1}{{2{\rm{x}} + 5}}{\rm{d}}x} \) bằng
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Lời giải:
Báo saiTa có: \(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaa8qCaeaada % WcaaqaaiaaigdaaeaacaaIYaGaamiEaiabgUcaRiaaiwdaaaGaaeiz % aiaadIhaaSqaaiaaicdaaeaacaaIXaaaniabgUIiYdaaaa!3FDA! \int\limits_0^1 {\frac{1}{{2x + 5}}{\rm{d}}x} \)\(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeyypa0ZaaS % aaaeaacaaIXaaabaGaaGOmaaaadaWdXbqaamaalaaabaGaaGymaaqa % aiaaikdacaWG4bGaey4kaSIaaGynaaaacaqGKbWaaeWaaeaacaaIYa % GaamiEaiabgUcaRiaaiwdaaiaawIcacaGLPaaaaSqaaiaaicdaaeaa % caaIXaaaniabgUIiYdGccqGH9aqpaaa!475D! = \frac{1}{2}\int\limits_0^1 {\frac{1}{{2x + 5}}{\rm{d}}\left( {2x + 5} \right)} = \)\(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaqGaaeaada % WcaaqaaiaaigdaaeaacaaIYaaaaiGacYgacaGGUbWaaeWaaeaacaaI % YaGaamiEaiabgUcaRiaaiwdaaiaawIcacaGLPaaaaiaawIa7amaaDa % aaleaacaaIWaaabaGaaGymaaaaaaa!4179! \left. {\frac{1}{2}\ln \left( {2x + 5} \right)} \right|_0^1\)\(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaeyypa0ZaaS % aaaeaacaaIXaaabaGaaGOmaaaaciGGSbGaaiOBamaalaaabaGaaG4n % aaqaaiaaiwdaaaaaaa!3BF4! = \frac{1}{2}\ln \frac{7}{5}\)