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2

# Indefinite Integrals of Elementary Functions

## 2.0 Introduction

### 2.00 General remarks

We omit the constant of integration in all the formulas of this chapter. Therefore, the equality sign (=) means that the functions on the left and right of this symbol differ by a constant. For example (see integral 2.01 15), we write

$\int \frac{\text{d}x}{1+{x}^{2}}=\mathrm{arctan}x=-\text{arccot}x$

although

When we integrate certain functions, we obtain the logarithm of the absolute value In such formulas, the absolute-value ...

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