Question

Let c = (-2,3) and d = (-1,2) find || 2c - d ||A. 3B. 5.C. 10 D. 12Please show how to get the answer, if able to.

Answer 1

given c = (-2,3) and d = (-1,2)

so,

2c - d = 2 * (-2,3) - (-1,2) = (-4 , 6) - (-1 , 2) = (-4 + 1 , 6 - 2) = (-3 , 4)

So,

|| 2c - d || =

|| 2c - d || = 5

The answer is option B. 5