Integration of 2 dz
There seems to be a typo in the question as "2 dz" doesn't make sense in the context of integration. However, assuming it is meant to be "∫ 2 dz" which represents the integration of the constant function 2 with respect to the variable z, we can proceed with solving it.

Integration Process
When integrating a constant function like 2 with respect to a variable, the result will simply be the constant multiplied by the variable. In this case, the integral of 2 dz would be:
∫ 2 dz = 2z + C
Where C is the constant of integration that is added to account for any potential constant terms that may have been present in the original function.

Explanation
The integral of 2 dz gives us the function 2z, where z is the variable with respect to which we are integrating. This means that the result is a function that represents a straight line with a slope of 2. The constant term C accounts for the fact that when we differentiate 2z, we would get back to 2.

Conclusion
In conclusion, the integration of 2 dz is simply 2z + C, where z is the variable of integration and C is the constant of integration. This result represents a linear function with a slope of 2.