The value of `int_(-(pi/4)^(1/3))^((pi/4)^(1/3))(x^2)/((1+sin^2x^3)(1+e^x^7))dxi s` (a)`1/3tan^(-1)sqrt(2)` (b) `1/(3sqrt(2))tan^(-1)sqrt(2)` (c)`int_0^(pi/4)(sec^2dx)/(sec^2x+tan^2x)` (d) `1/3int_0^(pi/4)(sec^2x dx)/(sec^2x+tan^2x)`

The value of int_(-((pi)/(4))^((1)/(3)))^(((pi)/(4))^((1)/(3)))(x^(2))/((1+sin^(2)x^(3))(1+e^(x)^^7))dxis (a) (1)/(3)tan^(-1)sqrt(2)(b)(1)/(3sqrt(2))tan^(-1)sqrt(2)(c)int_(0)^((pi)/(4))(sec^(2)dx)/(sec^(2)x+tan^(2)x)(d)(1)/(3)int_(0)^((pi)/(4))(sec^(2)dx)/(sec^(2)x+tan^(2)x)

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