Question

vector (2,-4) & (1,-3,2) find the lengths

Answer 1

ok. distance formula is: square each component. sum the results. take square root. It's the same whether vectors are 2D, 3D, etc..

Answer 2

So for the first vector: \[\sqrt{2^2+(-4)^2}=\sqrt{20}=2\sqrt5\]

Answer 3

thank you a thousand times

Answer 4

no prob. What did you get for the second vector?

Answer 5

sqr root 14

Answer 6

if thats not right i've made a mistake factoring

Answer 7

looks correct.