Answer:
Your column vector is:
[tex]\left[\begin{array}{c}15&10&5&0&-5&-10&-15&-20&-25\end{array}\right][/tex]
Step-by-step explanation:
The first step to solve your problem is knowing what is a column vector:
A column vector is a matrix that only has one column, and multiple rows.
The problem wants the vector to range from 15 to -25.
It means that the biggest value in the vector is 15, and the smallest is -25. Since it is from 15 to -25, the first element of your column vector is 15, and the last element is -25.
With a step size of 5
At each element, you decrease 5. So you have: 15,10,..,-20,-25.
The vector is:
[tex]\left[\begin{array}{c}15&10&5&0&-5&-10&-15&-20&-25\end{array}\right][/tex]