Question: Vector notation. Which of the following expressions uses correct notation? When the expression does make sense, give its length. In the following, \(a\) and \(b\) are 10 -vectors, and \(c\) is a 20 -vector.

1. \(a+b-c_{3: 12}\).
2. \(\left(a, b, c_{3: 13}\right)\)
3. \(2 a+c\).
4. \((a, 1)+\left(c_{1}, b\right)\).
5. \(((a, b), a)\).
6. \(\left[\begin{array}{ll}a & b\end{array}\right]+4 c\)
7. \(\left[\begin{array}{l}a \\ b\end{array}\right]+4 c\).

Price: $2.99

Solution: The downloadable solution consists of 1 pages
Deliverable: Word Document