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If int sin^-1 ((2x + 2)/sqrt(4x^2 + 8x +...

If `int sin^-1 ((2x + 2)/sqrt(4x^2 + 8x + 13)) dx = (x + 1) tan^-1 ((2x+2)/3) + lambda In (4x^2 + 8x + 13) + c`, then the value of `-4lambda` must be

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