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1. Sometimes we work with tricky integrals. For example, consider the integral (1). What is ??? We can evaluate (1) directly as (2). Thus its derivative is (3). But what about the general case? Advertisements
1. Try performing the following integral (1) ??? You cannot do this (easily) with the techniques we’ve discussed so far. So lets introduce a new one: integration by parts.
1. Try integrating (1)??? It’s kind of hard, so we try to do something very clever: use the chain rule.