Determine vector and parametric equations for the z-axis.

In summary, a vector equation for the z-axis can be written as r = ti + tj + zk, where r is the position vector, t is a scalar parameter, and i, j, and k are unit vectors in the x, y, and z directions respectively. The parametric equations for the z-axis can be determined by setting the x and y components of the vector equation equal to zero. These equations represent a line passing through the origin in the z direction and cannot be used to represent a specific point. To graph the z-axis, one can assign different values to the scalar parameter t in the parametric equation or plot the coordinates of points on a three-dimensional coordinate system using the vector equation. The vector and parametric equations
  • #1
kathialopez
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Determine vector and parametric equations for the z-axis.

HOW DO YOU ANSWER THIS QUESTION?
 
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  • #2
kathialopez said:
Determine vector and parametric equations for the z-axis.

HOW DO YOU ANSWER THIS QUESTION?

Just a guess since I don't know exactly what definitions you're working from ... but parametric equations for the z-axis would be

x(t) = 0; y(t) = 0; z(t) = t

for [itex]t \in \mathbb{R}[/itex]

Is that what you mean?
 

Related to Determine vector and parametric equations for the z-axis.

1. What is a vector equation for the z-axis?

A vector equation for the z-axis can be written as r = ti + tj + zk, where r is the position vector, t is a scalar parameter, and i, j, and k are unit vectors in the x, y, and z directions respectively.

2. How do you determine the parametric equations for the z-axis?

The parametric equations for the z-axis can be determined by setting the x and y components of the vector equation equal to zero. This results in the equations x = 0 and y = 0. The z component of the vector equation, z = tk, becomes the parametric equation for the z-axis.

3. Can the equations for the z-axis be used to represent a point?

No, the equations for the z-axis do not represent a specific point but rather a line passing through the origin in the z direction. To represent a point on the z-axis, the scalar parameter t must be given a specific value.

4. How do you graph the z-axis using its vector and parametric equations?

To graph the z-axis, plot points by assigning different values to the scalar parameter t in the parametric equation. This will result in a line passing through the origin and extending infinitely in the z direction. Alternatively, the vector equation can be graphed by plotting the x, y, and z coordinates of the points on a three-dimensional coordinate system.

5. Are the vector and parametric equations for the z-axis unique?

Yes, the vector and parametric equations for the z-axis are unique and cannot be interchanged with equations for other axes. They represent the specific properties and direction of the z-axis in three-dimensional space.

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