State the Fundamental Theorem for Line Integrals

goymdujf

goymdujf

Answered question

2021-11-28

State the Fundamental Theorem for Line Integrals

Answer & Explanation

Todd Williams

Todd Williams

Beginner2021-11-29Added 18 answers

Step 1
To State:
Fundamental Theorem for Line Integrals
Here we will use the knowledge of fundamental theorem of calculus in single-variable:
abg(t)=g(b)g(a)
The Fundamental Theorem of Line integrals in some respect is an extension to this theorem in higher dimensions
Step 2
The statement of the Fundamental Theorem of Line Integral states that:
abf(r(t)).r(t)=f(r(b))f(r(a))
where,
1) f is some scalar-valued multivariable function
2) f is the gradient of f
3) r(t) is some vector-valued function which parametrizes some path through the input space of f
r(a),r(b)
with end-points
4) r(t) is the derivative of r(t)
In short the line integral of gradient of a function gives the total change in value of function at the end points.
Step 3
Answer:
abf(r(t)).r(t)=f(r(b))f(r(a))

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