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[" If "I=int(0)^( pi/2)(n(sin x)dx" then...

[" If "I=int_(0)^( pi/2)(n(sin x)dx" then "int_(-pi/4)^(x/4)cn(sin x+cos x)dx],[[" (A) "(I)/(2)," (B) "(I)/(4)," (C) "(1)/(sqrt(2))," (D) "1]]

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