Trong không gian R2, cho tích vô hướng (x, y)=((x1;x2),(y1;y2))=x1y1−x1y2−x2y1 +3x2y2. Tính độ dài của véctơ v=(−1;3)

f(x) is going down by 4

step-by-step explanation:

(its either that or its going left by 4)

18

step-by-step explanation:

draw the shape and you will see that f and k are actually at adjacent vertices (points of the hexagon that are neighboring).   so find the distance between (1,2) and (4,2).   that is easy since (1,2) and (4,2) is just a vertical distance to count, which is 3.   it is a regular polygon which means all sides are congruent.   you have 6 sides (hexa) so multiply 6 by 3 to receive 18.

the least value out of the data shown is 5, maybe if you post a picture with it i could a little more.

step-by-step explanation:

according to this law, when unemployment goes up by 1%, gdp drops by 2%. in the question, unemployment rate goes from 2% to 5%, meaning unemployment goes up by 3%, so the gdp drops by 6%. thus the effect is a drop in gdp by 6%.

step-by-step explanation: