Current location - Training Enrollment Network - Mathematics courses - Dr is a vector in college physics. Why write the integral first and then determine the zero potential energy point? This is not what I think.
Dr is a vector in college physics. Why write the integral first and then determine the zero potential energy point? This is not what I think.
It is a good and correct habit to establish coordinates before integration.

But for the integral formula, the result of first integrating and then determining the zero point is the same as that of first determining the zero point and then integrating.

Look at the formula I gave, which illustrates this point.

Just like a function, does the area of its infinite integral have anything to do with which point you start integrating?