- #1
Bamboozled91
- 7
- 0
∫
Use the definition to find the line integral of F(x,y) = (y,x) along each of the following paths.
The parabola y = x^2 from (-1,1) to (1,1)
F(x) = gradientf(x)
∫F(x) dx = f(b) - f(a)
I tried (y,x) dot (t,t^2) which gave me yt+xt^2 which 2t^3 thus ∫ from 1 to -1 of 2t^3 unfortunatley this was incorrect so I just did this r(t) = (1-t)<-1,1> + t<1,1> which give
<-1,1+2t> then ∫x^2 ds = ∫(-1)^2sqrt(4) = ∫2 dt = 2t from 0 to 1 which gives 2 this was correct however I am not sure if this is a valid way to answer
Homework Statement
Use the definition to find the line integral of F(x,y) = (y,x) along each of the following paths.
The parabola y = x^2 from (-1,1) to (1,1)
Homework Equations
F(x) = gradientf(x)
∫F(x) dx = f(b) - f(a)
The Attempt at a Solution
I tried (y,x) dot (t,t^2) which gave me yt+xt^2 which 2t^3 thus ∫ from 1 to -1 of 2t^3 unfortunatley this was incorrect so I just did this r(t) = (1-t)<-1,1> + t<1,1> which give
<-1,1+2t> then ∫x^2 ds = ∫(-1)^2sqrt(4) = ∫2 dt = 2t from 0 to 1 which gives 2 this was correct however I am not sure if this is a valid way to answer