00:01
In this problem, we want to evaluate the line integral of 1c of f -dotted dr, where f, the vector field, is given as a vector function of two variables to equal to 3x, 4y.
00:19
And that c is represented by the parametric function, r of t, which is equal to 2 ,000 of t, comma, 2 sine of t.
00:31
And the t ranges between 0 and pi over 2.
00:36
So with this information, we can start getting r prime of t, and our prime of t is going to equal to negative 2, sine of t, comma, two, cosal of t.
00:48
Next, we want to represent the vector field in terms of t.
00:53
So the vector field, in terms of the parameterization for c, will now equal to 3 times x...