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[" 11."4[8" y "=sec(tan^(-1)x)vec e^(TT)...

[" 11."4[8" y "=sec(tan^(-1)x)vec e^(TT),vec " th "(dy)/(dx)=quad [BSEB,2009]],[[" (A) "(x)/(sqrt(1+x^(2)))," (B) "-(x)/(sqrt(1+x^(2)))],[" (C) "(x)/(sqrt(1-x^(2)))," (D) "(x)/(8)+4(7)/(4)" and "]]

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