For each of the following integrals, decide if it is a proper integral or improper integral. Justify your answers. Note that you are NOT being asked to evaluate these integrals, just to classify them. 1 (a) [In S (b) L In(x - 1) dx sin x 1+x² dx (c) (d) S S 3.x 3x 1 1 1 dx dx

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A: we will find the required.

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