(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Using the u substutituion u = 2x + 1, ∫(2x + 1)^{1/2}dx (when x goes from 0 to 2) is equivalent to?

Answer: (1/2)*∫(u)^{1/2}du (when x goes from 1 to 5)

2. Relevant equations

3. The attempt at a solution

If u is 2x + 1, then du = 2dx. Thus, I get

(1/2)*∫(u)^{1/2}du (when x goes from 0 to 2)

The only problem is where did the x goes from 1 to 5 come from? Did I do something wrong, or is the AP packet wrong?

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# Homework Help: Using u substitution, which of the following is equivalent to this integral?

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