ADMICRO

Hàm số \(% MathType!MTEF!2!1!+- % feaahqart1ev3aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamyEaiabg2 % da9maalaaabaGaaGymaaqaaiaaikdaaaWaaeWaaeaacaaIXaGaey4k % aSIaciiDaiaacggacaGGUbGaamiEaaGaayjkaiaawMcaamaaCaaale % qabaGaaGOmaaaaaaa!415B! y = \frac{1}{2}{\left( {1 + \tan x} \right)^2}\) có đạo hàm 

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