Question

Let u = <-8, -9>. Find 7u.

Answer 1

\[\large \vec u\quad =\;\;\qquad <-8,\quad -9>\]\[\large 7\vec u\quad =\quad 7<-8,\quad -9>\]This simply multiply each component by 7! :)\[\large 7\vec u\quad =\quad <-8\cdot7,\quad -9\cdot7>\]

Answer 2

thnx