Question

B=([4],[-18]) Given that -2a=b, write a as a column vector.

Answer 1

To find vector a in the equation -2a = b, divide both sides by -2 to get a = -b/2. Substitute the values of b to find a = ([2],[-9]).

Step-by-step explanation:

To solve for a, we can rearrange the equation -2a = b and divide both sides by -2: a = -b/2. Given that b = ([4],[-18]), we substitute the values of b into the equation to find a.

a = -([4],[-18])/2 = ([4],[-18])/2 = ([2],[-9])

Therefore, the column vector a is ([2],[-9]).