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**1. Homework Statement**

Work it out with pencil and paper.

[tex] \int^x \frac{x'dx'}{1+x'^2} [/tex]

**2. Homework Equations**

none

**3. The Attempt at a Solution**

My only question is what does it mean to have only one limit of integration? I am used to doing integrals in the indefinite case with no limits of integration, or in the definite case with two limits of integration.

What does this single limit of integration mean, and what do I do with it? Do I assume 0 for the other limit? Do I just solve it as a an indefinite integral?

Thanks for any clues!

**1. Homework Statement**

**2. Homework Equations**

**3. The Attempt at a Solution**

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