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[qquad [vec x,(1)/(x){e^(x)+e^((x))=a(0)...

[qquad [vec x,(1)/(x){e^(x)+e^((x))=a_(0)+a_(1)x+a_(2)x^(2)+...rArr2a_(1)+2^(3)a_(3)+2^(5)a_(5)+......," [EAMCET "2009]],[(int_(1)^(1)int_(a)^(2)cos(2x)e^(-1),3)1," 4) "]]

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