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Suppose that a nonnegative function $y=f(x)$ has a continuous first derivative on $[a, b] .$ Let $C$ be the boundary of the region in the $x y$ -plane that is bounded $C$. below by the $x$ -axis, above by the graph of $f,$ and on the sides by the lines $x=a$ and $x=b .$ Show that $$\int_{a}^{b} f(x) d x=-\oint_{C} y d x.$$

$$\begin{aligned}=& \oint_{C} 0 d y-y d x \\&=-\oint_{C} y d x\end{aligned}$$

Calculus 3

Chapter 16

Integrals and Vector Fields

Section 4

Green’s Theorem in the Plane

Vector Functions

Oregon State University

Harvey Mudd College

Baylor University

University of Michigan - Ann Arbor

Lectures

03:04

In mathematics, a function is a relation between a set of inputs and a set of permissible outputs with the property that each input is related to exactly one output. An example is the function that relates each real number x to its square x. The input of a function is called the argument and the output is called the value. The set of all permitted inputs is called the domain of the function. Similarly, the set of all permissible outputs is called the codomain. The most common symbols used to represent functions in mathematics are f and g. The set of all possible values of a function is called the image of the function, while the set of all functions from a set "A" to a set "B" is called the set of "B"-valued functions or the function space "B"["A"].

08:32

In mathematics, vector calculus is an important part of differential geometry, together with differential topology and differential geometry. It is also a tool used in many parts of physics. It is a collection of techniques to describe and study the properties of vector fields. It is a broad and deep subject that involves many different mathematical techniques.

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