What is the integral of 4x3?, 12x2+ C, x4+ C, -4x2 + C, -3x4+ C, What is the integral of sin x?, -sin x + C, cos x + C, -cos x + C, sin x + c, What is the integral of 1/(1 + x2), ln (1+ x2) + C, tan-1 x + C, cos-1 (x) + C, sin-1x + C.

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