assign variable k as imaginary number

how do I assign k as an imaginary variable in the equn.

U= -8*i - 14*j + 25*k

Answer 1

[Walter Roberson]

You don't. Your i and j and k are not referring to imaginary variables, they are referring to mutually perpendicular direction vectors. You can emulate the form A*i + B*j by using the complex value A + B*i or A + B*j which are identical (i and j mean exactly the same thing in MATLAB.) MATLAB does not, however, provide syntax for extending this notation into another direction.

The closest you can get without loading in a package from the File Exchange would be coding something like

U = [-8 -14 +25]

and then taking care with the operations done on the vector.

[AngelsaAtWar]

Thank you that explains alot