This is a problem for MATLAB program

In engineering mechanics, a vector is a set of numbers that indicate both magnitude and direction. Terms such as velocity and force are vector quantities. An example of a velocity vector could be meters/second. This vector describes the velocity of a particle at a certain point in three-dimensional space, . In solving problems related to vectors, it's handy to know the unit vector of a certain measurement. A unit vector is a vector that has a certain direction, but a magnitude of 1. The equation for a unit vector in three- dimensional space is: r,y,z