Math Problem Statement

Find a parametric representation for the surface. the plane that passes through the point (0, −1, 5) and contains the vectors

<4, 1, 2>

and

<−6, 4, 5>

(Enter your answer as a comma-separated list of equations. Let x, y, and z be in terms of u and/or v.)

Solution

To find a parametric representation of a plane, we need a point on the plane and two direction vectors that lie on the plane. You are given:

  • A point P0=(0,1,5)P_0 = (0, -1, 5)
  • Two vectors that lie on the plane: v1=4,1,2andv2=6,4,5\mathbf{v_1} = \langle 4, 1, 2 \rangle \quad \text{and} \quad \mathbf{v_2} = \langle -6, 4, 5 \rangle

The parametric representation of the plane can be written as:

r(u,v)=P0+uv1+vv2\mathbf{r}(u, v) = P_0 + u \mathbf{v_1} + v \mathbf{v_2}

Where uu and vv are parameters. Substituting the values of P0P_0, v1\mathbf{v_1}, and v2\mathbf{v_2}:

r(u,v)=(0,1,5)+u4,1,2+v6,4,5\mathbf{r}(u, v) = (0, -1, 5) + u \langle 4, 1, 2 \rangle + v \langle -6, 4, 5 \rangle

Now, let's break this down component-wise:

  • For xx-coordinate: x=0+4u6v=4u6vx = 0 + 4u - 6v = 4u - 6v
  • For yy-coordinate: y=1+u+4v=1+u+4vy = -1 + u + 4v = -1 + u + 4v
  • For zz-coordinate: z=5+2u+5v=5+2u+5vz = 5 + 2u + 5v = 5 + 2u + 5v

Thus, the parametric equations for the plane are:

x=4u6v,y=1+u+4v,z=5+2u+5vx = 4u - 6v, \quad y = -1 + u + 4v, \quad z = 5 + 2u + 5v

Let me know if you'd like more details or have any questions!

Here are 5 related questions to expand on this topic:

  1. How would you find the normal vector to this plane?
  2. What is the general equation of a plane, and how does it relate to parametric equations?
  3. How can we find the intersection of this plane with another surface?
  4. What are the conditions for two planes to be parallel?
  5. How would you find the distance between two points in 3D space?

Tip: In parametric representations, the two vectors v1\mathbf{v_1} and v2\mathbf{v_2} serve as the directional basis of the surface or plane.

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Math Problem Analysis

Mathematical Concepts

Vector Algebra
Parametric Equations
Planes in 3D Space

Formulas

Parametric representation of a plane: r(u, v) = P0 + u * v1 + v * v2
x = 4u - 6v
y = -1 + u + 4v
z = 5 + 2u + 5v

Theorems

Plane equation derived from vectors and points in 3D space

Suitable Grade Level

Grades 10-12 (Pre-Calculus/Calculus Level)