Question

@mlamott15 Math Help!!!

Answer 1

haha i feel so special XD whats up tho??

Answer 2

Find the inner product of vector a and vector b if vector a = (4, -2, -2) and vector b = (-7, -2, 4), and state whether the vectors are perpendicular.

Answer 3

dude like i said....i had someone do my vector homework for me so i have no clue

Answer 4

:( haha
what about @chaser71 or @ilovehim14<3

Answer 5

dude @chaser71 dosent know :P why ask him?? hahaha

Answer 6

hey dont forget me ask @Twilkis12 lol he might

Answer 7

Hey @Twilkis12

Answer 8

idk

Answer 9

ugh! no!!! lol

Answer 10

Find the inner product of vector a and vector b if vector a = (4, -2, -2) and vector b = (-7, -2, 4), and state whether the vectors are perpendicular.

Answer 11

@Destinymasha @RadEn @eliassaab @phi @wio @ParthKohli @campbell_st @AravindG @Luigi0210 @2epdrix @tkhunny

Answer 12

Well, do it. 4*(-7) + (-2)*(-2) + (-2)*4 = ??
And, what does that tell us?

Answer 13

@mathslover

Answer 14

-32 @tkhunny

Answer 15

What does that mean?

Answer 16

Okay, now the second question. What does that tell us?

Perpendicular implies an inner product of zero (0). Did we get zero (0)?

Answer 17

no. So, if it is not 0 it is not perpendicular?

Answer 18

@tkhunny

Answer 19

Why is there still a question? Go with confidence.

Zero? Perpendicular.
Not Zero? Not Perpendicular.

Answer 20

Help with one more?
A triangular prism has vertices at A(2, 0, 0), B(2, 1, 3), C(2, 2, 0), D(0, 0, 0), E(0, 1, 3), and F(0,2, 0).
Which image point has the coordinates (1, 4, 3) after a translation using the vector (1, 2, 3)?

Answer 21

@tkhunny