[" The value of "int(0)^( pi/2)(1+2cos x...

[" The value of "int_(0)^( pi/2)(1+2cos x)/((2+cos x)^(2))dx" is "],[[" (a) "-(1)/(2)," (b) "2],[" (c) "(1)/(2)," (d) none of thees "]]

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