Answer:
< - 13, - 4 >
Step-by-step explanation:
To find - f and - v , multiply each of the elements in the vector by - 1
- f - v
= - < 11, 9 > - < 2, - 5 >
= < - 11, - 9 > + < - 2, 5 >
Add corresponding elements in the 2 vectors
< - 11 - 2 , - 9 + 5 > = < - 13, - 4 >
