Tính tích phân \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamysaiabg2 % da9maapehabaWaaOaaaeaacaaI0aGaamiEaiabgUcaRiaaigdaaSqa % baGccaqGKbGaamiEaaWcbaGaaGimaaqaaiaaikdaa0Gaey4kIipaaa % a!4108! I = \int\limits_0^2 {\sqrt {4x + 1} {\rm{d}}x} \)
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Lời giải:
Báo sai\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamysaiabg2 % da9maapehabaWaaOaaaeaacaaI0aGaamiEaiabgUcaRiaaigdaaSqa % baGccaqGKbGaamiEaaWcbaGaaGimaaqaaiaaikdaa0Gaey4kIipaki % abg2da9maalaaabaGaaGymaaqaaiaaisdaaaWaa8qCaeaadaqadaqa % aiaaisdacaWG4bGaey4kaSIaaGymaaGaayjkaiaawMcaamaaCaaale % qabaWaaSaaaeaacaaIXaaabaGaaGOmaaaaaaGccaqGKbWaaeWaaeaa % caaI0aGaamiEaiabgUcaRiaaigdaaiaawIcacaGLPaaaaSqaaiaaic % daaeaacaaIYaaaniabgUIiYdGccqGH9aqpdaWcaaqaaiaaigdaaeaa % caaI0aaaaiaac6cadaWcaaqaaiaaikdaaeaacaaIZaaaaiaac6cada % qadaqaaiaaisdacaWG4bGaey4kaSIaaGymaaGaayjkaiaawMcaamaa % CaaaleqabaWaaSaaaeaacaaIZaaabaGaaGOmaaaaaaGcdaabbaabae % qabaGaaGOmaaqaaiaaicdaaaGaay5bSdGaeyypa0ZaaSaaaeaacaaI % XaGaaG4maaqaaiaaiodaaaaaaa!666A! I = \int\limits_0^2 {\sqrt {4x + 1} {\rm{d}}x} = \frac{1}{4}\int\limits_0^2 {{{\left( {4x + 1} \right)}^{\frac{1}{2}}}{\rm{d}}\left( {4x + 1} \right)} = \frac{1}{4}.\frac{2}{3}.{\left( {4x + 1} \right)^{\frac{3}{2}}}\left| \begin{array}{l} 2\\ 0 \end{array} \right. = \frac{{13}}{3}\)