- #1
asdf1
- 734
- 0
what's the difference between
[tex]\int_{a}^{b} f(r(t)) dt[/tex]
and
[tex]\int_{a}^{b} F(r(t)) (dr/dt)dt[/tex]?
(where F is a vector function)
because when I'm calculating those two types of questions, the first question just uses dt to integrate the line integral but in the 2nd question, i have to differentiate dr?
[tex]\int_{a}^{b} f(r(t)) dt[/tex]
and
[tex]\int_{a}^{b} F(r(t)) (dr/dt)dt[/tex]?
(where F is a vector function)
because when I'm calculating those two types of questions, the first question just uses dt to integrate the line integral but in the 2nd question, i have to differentiate dr?