ADMICRO

Cho \(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaaGimaiabgY % da8iaadIhacqGH8aapdaWcaaqaaiabec8aWbqaaiaaikdaaaaaaa!3C3B! 0 < x < \frac{\pi }{2}\) và \(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaa8qCaeaaca % WG4bGaciiDaiaacggacaGGUbGaamiEaiaabsgacaWG4bGaeyypa0da % leaacaaIWaaabaGaamyyaaqdcqGHRiI8aOGaamyBaaaa!42AD! \int\limits_0^a {x\tan x{\rm{d}}x = } m\). Tính \(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamysaiabg2 % da9maapehabaWaaeWaaeaadaWcaaqaaiaadIhaaeaaciGGJbGaai4B % aiaacohacaWG4baaaaGaayjkaiaawMcaamaaCaaaleqabaGaaGOmaa % aakiaabsgacaWG4baaleaacaaIWaaabaGaamyyaaqdcqGHRiI8aaaa % !450D! I = \int\limits_0^a {{{\left( {\frac{x}{{\cos x}}} \right)}^2}{\rm{d}}x} \) theo a và m

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