D[x*Integrate[y[t], {t, 1, x}] - (x + 1) Integrate[ t*y[t], {t, 1, x}], {x, 2}]D[x*Integrate[y[t], {t, 1, x}] - (x + 1) Integrate[ t*y[t], {t, 1, x}], {x, 2}]

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