1003188704 | math4u.vsb.cz

SubArea:

Level:

Project ID:

1003188704

Source Problem:

Accepted:

1

Clonable:

1

Easy:

0

Given points

A = [- 4; 1; 4]

and

B = [4; - 3; 0]

, determine which of the following parametric equations does not define the ray

A B

.

\begin{aligned} \mapsto A B : x & = - 4 + 8 t, \\ y & = 1 - 4 t, \\ z & = 4 - 4 t; t \in (- \infty; 0] \end{aligned}

\begin{aligned} \mapsto A B : x & = - 4 + 8 t, \\ y & = 1 - 4 t, \\ z & = 4 - 4 t; t \in [0; \infty) \end{aligned}

\begin{aligned} \mapsto A B : x & = - 4 + 2 t, \\ y & = 1 - t, \\ z & = 4 - t; t \in [0; \infty) \end{aligned}

\begin{aligned} \mapsto A B : x & = - 4 - 8 t, \\ y & = 1 + 4 t, \\ z & = 4 + 4 t; t \in (- \infty; 0] \end{aligned}