Indefinite integral is the most important operation in mathematical foundation. Differential is very important in solving an indefinite integral, and it is the focus of indefinite integral. Generally speaking, the advantage of differentiation is manifested in the obvious differential compensation term in the integrand function, and this differentiation and the remaining term can be integrated into the function of differential term. Therefore, the basic indefinite integral formula is an important prerequisite for mastering and applying this method flexibly.

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