Math Problem Statement

write the equation of a plane passing through p with direction vectos u and v in vector and parametric forms

Solution

To find the equation of a plane passing through a point P(x0,y0,z0)P(x_0, y_0, z_0) and containing two direction vectors u=u1,u2,u3\mathbf{u} = \langle u_1, u_2, u_3 \rangle and v=v1,v2,v3\mathbf{v} = \langle v_1, v_2, v_3 \rangle, we can represent the plane in vector form and parametric form as follows:

1. Vector Form:

The vector form of a plane can be written as: r(s,t)=r0+su+tv\mathbf{r}(s, t) = \mathbf{r}_0 + s\mathbf{u} + t\mathbf{v} Where:

  • r(s,t)\mathbf{r}(s, t) is a general point on the plane.
  • r0=x0,y0,z0\mathbf{r}_0 = \langle x_0, y_0, z_0 \rangle is the position vector of point PP.
  • u=u1,u2,u3\mathbf{u} = \langle u_1, u_2, u_3 \rangle and v=v1,v2,v3\mathbf{v} = \langle v_1, v_2, v_3 \rangle are the direction vectors.
  • ss and tt are scalar parameters.

So, the vector form of the plane is: r(s,t)=x0,y0,z0+su1,u2,u3+tv1,v2,v3\mathbf{r}(s, t) = \langle x_0, y_0, z_0 \rangle + s \langle u_1, u_2, u_3 \rangle + t \langle v_1, v_2, v_3 \rangle

2. Parametric Form:

Expanding the vector form into coordinates, we get the parametric equations for the plane: x=x0+su1+tv1x = x_0 + s u_1 + t v_1 y=y0+su2+tv2y = y_0 + s u_2 + t v_2 z=z0+su3+tv3z = z_0 + s u_3 + t v_3

Here, ss and tt are free parameters that can take any real values, determining the coordinates of any point on the plane.


Would you like more details or have any questions about these forms?

Related Questions:

  1. How can I find the normal vector to the plane using the direction vectors u\mathbf{u} and v\mathbf{v}?
  2. What is the general form of a plane equation if we have the normal vector?
  3. How do I calculate the angle between two planes?
  4. Can you explain how to find the intersection of a line with the plane?
  5. How do I find the distance between a point and the plane?

Tip:

The cross product of the two direction vectors u\mathbf{u} and v\mathbf{v} gives the normal vector to the plane.

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Math Problem Analysis

Mathematical Concepts

Vector Algebra
Plane Geometry
Parametric Equations

Formulas

Vector form of a plane: r(s, t) = r0 + s*u + t*v
Parametric form: x = x0 + su1 + tv1, y = y0 + su2 + tv2, z = x0 + su3 + tv3

Theorems

Plane equation in vector form
Plane equation in parametric form

Suitable Grade Level

Grades 11-12 or College Level