**1. What does the dx stand for in an integration problem?**

It is just to say what the variable is that is being integrated. For expressions with only one variable it is often omitted.

**2. Does the "c" always have to be added when integrating?**

Yes, unless enough information is given to find its value or the integration is a

definiteintegral.

**3. Is a constant of integration the same as an arbitrary constant?**

Yes.