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Copyright © Cengage Learning. All rights reserved. 7.2 Integration by Parts Copyright © Cengage Learning. All rights reserved.

Integration by Parts Integration by parts is based on the formula for the derivative of a product where both u and v are differentiable functions of x.

Integration by Parts When u' and v' are continuous, you can integrate both sides of this equation to obtain By rewriting this equation, you obtain the following theorem.

Integration by Parts This formula expresses the original integral in terms of another integral. Depending on the choices of u and dv, it may be easier to evaluate the second integral than the original one.

Integration by Parts

Example 1 – Integration by Parts Find .

Examples 𝑥 2 𝑙𝑛𝑥𝑑𝑥 𝑙𝑛𝑥𝑑𝑥 𝑎𝑟𝑐𝑠𝑖𝑛𝑥𝑑𝑥 𝑥 2 𝑠𝑖𝑛𝑥𝑑𝑥 𝑠𝑒𝑐 3 𝑥𝑑𝑥