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natita [175]
3 years ago
6

Find a set of parametric equations for the line of intersection of the planes x-3y+6z=4 5x+y-z=4

Mathematics
2 answers:
mihalych1998 [28]3 years ago
7 0

Parametric equation of line of intersections of the planes.

x(t) = 1 - 3t

y(t) = 31t - 1

z(t) = 16t

Explanation:

The equation of planes are x-3y+6z=4  and 5x+y-z=4

  • Equation of first plane: x-3y+6z=4
  • Normal vector of this plane, n_1=
  • Equation of 2nd plane: 5x+y-z=4
  • Normal vector of this plane, n_1=

Point of intersection of x-3y+6z=4  and 5x+y-z=4

Let z = 0

x - 3y = 4 and 5x + y = 4

solve for x and y

x = 1 and y = -1

Point of intersection of plane, (1,-1,0)

<em>The line of intersection of both plane must be passes through this point. </em>

Parallel vector of line is cross product of n_1\times n_2

\bec{b}=\times

\vec{b}=

<em><u>Equation of line:-</u></em>

\dfrac{x-1}{-3}=\dfrac{y+1}{31}=\dfrac{z-0}{16}=t

<em><u>Parametric equation of line:-</u></em>

x(t) = 1 - 3t

y(t) = 31t - 1

z(t) = 16t

Inessa05 [86]3 years ago
3 0

Answer:

Step-by-step explanation:

Two equations of planes are given.

We have to find the equation of the line which is formed by intersection of these two planes in parametric form

x-3y+6z=4 \\5x+y-z=4

Let us eliminate one variable

Multiply I equation by 5 and subtract II from 5 * I

5x-15y+30z=20 \\5x+y-z=4

-16y+31z=16 \\

16y+16 = 31z

Or y+1 =\frac{31z}{16}

Consider II equation

5x+y-z=4

5x+\frac{31z}{16}-1 -z=4\\5x+\frac{15z}{16}=5\\x=\frac{3z-16}{16}

Let z=z

x = \frac{3z-16}{16} and y = \frac{31z}{16}-1

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