Question

Help,fast Please.
Thanks
for v=<2,-3> ,what is the graph of 2v

Answer 1

@thomaster

Answer 2

@zepdrix

Answer 3

@Luigi0210

Answer 4

@abb0t

Answer 5

@whpalmer4

Answer 6

@beccaboo333

Answer 7

same vector but double length

Answer 8

yes, to multiply a scalar (such as 2) with a vector (such as v=<2,-3>) you just multiply the scalar by each component of the vector and stuff the result back in the same spot.

v=<1,4,7>
3v = <3*1,3*4,3*7> = <3,12,21>

To add or subtract, you just add or subtract the corresponding components:

v = <1,2,3>
u = <2,0,-1>
v+u = <1+2,2+0,3-1> = <3,2,2>