u = (10, 5)
-3u = ?
Use
k<a,b>=<ka,kb>
Post your answer for checking if you wish.
To find -3u, we need to multiply each component of the vector u by -3.
The vector u is given as u = (10, 5).
To multiply a vector by a scalar, we multiply each component of the vector by the scalar. So, to find -3u, we will multiply each component of u by -3:
-3u = -3 * (10, 5) = (-3 * 10, -3 * 5) = (-30, -15).
Thus, -3u = (-30, -15).