True or false questions about line/surface integral

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In summary, the conversation discusses the conditions for the integral of a function with continuous partial derivatives over a circle, and the application of Green's theorem and integrability. The statement that if the function does not satisfy certain conditions, it is usually wrong is also mentioned. It is then concluded that the second statement is incorrect and there is uncertainty about the first statement.
  • #1
zhuyilun
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Homework Statement


if f has a continuous partial derivatives on R^3 and c is any circle ,then the integral of gradient f dot dr over c is zero

integral of f(x,y) ds over -c= - integral of f(x,y) ds over c


Homework Equations





The Attempt at a Solution



if the condition is not mentioned, then that statement is usually wrong
so i guess the second one is wrong
not quite sure about the first one
 
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  • #2
For (1), think about "Green's theorem". Does it apply here?

For (2), the "conditions" are that the function be integrable. Which it is because the question give [itex]\int f(x) dx[/itex].
 

FAQ: True or false questions about line/surface integral

1. What is a line/surface integral?

A line/surface integral is a mathematical concept that calculates the area or volume of a shape or region in space. It involves integrating a function over a line or surface, with respect to a specific variable.

2. How is a line/surface integral different from a regular integral?

A line/surface integral is used to calculate the area or volume of a shape or region, while a regular integral is used to calculate the area under a curve. A line/surface integral also involves integrating over a line or surface, while a regular integral involves integrating over an interval.

3. What is the significance of a true or false question in relation to line/surface integrals?

A true or false question about line/surface integrals is used to test understanding and knowledge of the concept. This type of question can also help identify any misconceptions or gaps in understanding.

4. What are some common examples of line/surface integrals?

Some common examples of line/surface integrals include calculating the area of a circle, the volume of a sphere, and the work done by a force on an object moving along a certain path. They are also used in physics to calculate electric or magnetic fields.

5. Are there any real-world applications of line/surface integrals?

Yes, line/surface integrals have many real-world applications in engineering, physics, and other fields. They are used to calculate forces, electric and magnetic fields, fluid flow, and other physical quantities. They are also used in computer graphics to create 3D images and animations.

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