hoc360.net...(a tan2 x b tan x c) 2 cosx sin xdx 2 cosx cot xdx xdx — In(x2 + 4) + C 2 — -ln\cos...
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hoc360.net...(a tan2 x b tan x c) 2 cosx sin xdx 2 cosx cot xdx xdx — In(x2 + 4) + C 2 — -ln\cos — tan x cos — — - co sin — -co co — X COS X Created Date 6/21/2018 6:11:32