What is d(theta-hat)/d(theta) in Cylindrical Coordinates?

In summary, a unit vector is a vector with a magnitude of 1 that is used to indicate the direction of other vectors. The change in unit vectors can be calculated using the formula Δu = u<sub>2</sub> - u<sub>1</sub>, and can be caused by various factors such as a change in direction or magnitude of the original vector. This change can be represented graphically by plotting the initial and final unit vectors and measuring the angle between them. The concept of change in unit vectors is important in understanding transformations and predicting future changes in various scientific fields.
  • #1
khfrekek1992
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Homework Statement



In cylindrical coordinates: what is d(theta-hat)/d(theta)?

Homework Equations





The Attempt at a Solution



I'm fairly certain it is -rho... without a direction? or is it -rho*theta-hat?

Thanks in advance!
 
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  • #2
[tex]-\hat r[/tex]
 
  • #3
ooh, awesome, that fixes the problem I was having.. thank you!
 

1. What is a unit vector?

A unit vector is a vector with a magnitude of 1, which means it has a length of 1 and points in a specific direction. It is often used to indicate the direction of other vectors and has no units attached to it.

2. How do you calculate the change in unit vectors?

The change in unit vectors can be calculated using the formula: Δu = u2 - u1, where u2 and u1 are the final and initial unit vectors, respectively. This will give you the change in direction and magnitude of the vector.

3. What causes a change in unit vectors?

A change in unit vectors can be caused by various factors such as a change in the direction or magnitude of the original vector, or a change in the coordinate system used to represent the vector. It can also occur when the vector is transformed or rotated in space.

4. How is the change in unit vectors represented graphically?

The change in unit vectors can be represented graphically by plotting the initial and final unit vectors on a coordinate system and drawing a line connecting them. The angle between the two vectors can also be measured to determine the change in direction.

5. Why is the concept of change in unit vectors important?

The concept of change in unit vectors is important because it helps us understand how a vector has been transformed or changed, which is essential in many scientific fields such as physics, engineering, and computer graphics. It also allows us to calculate the rate of change of a vector, which is useful in predicting future changes or trends.

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