Question

Can someone please help me with a matrice question?

Answer 1

I got the answer as to what the vertices of th etriangle wld be but like does the transformation represent?

Answer 2

Please don't use doc. just copy and paste question and chooses

Answer 3

lol whtvr I used a pdf and most ppl dont have an issue with that

Answer 4

It is coming from a pdf format so I have to print screen it

Answer 5

Can u help me?

Answer 6

huh

Answer 7

ok i will try :/

Answer 8

LOL ppl can help

Answer 9

k

Answer 10

im "traying to try"

Answer 11

lol

Answer 12

Do you know how to do the matrix multiplication?

Answer 13

rows by columns?

Answer 14

yes

Answer 15

I did that

Answer 16

I got the answer of the points of the triangle but i need to know abt the transformation

Answer 17

you need to represent the transformation as a triangle?

Answer 18

how it see pictorially?

Answer 19

ummm ok they gave you the points of the traingle and then it asks u to transform by multiplying it by matrix A

Answer 20

I was able to get the points of the two transformed triangles but i dont get what the transformation is

Answer 21

tl;dr
\[\Large \begin{array}{l}
A = \left[ {\begin{array}{*{20}{c}}
0&{ - 1}\\
1&0
\end{array}} \right]\\
T = \left[ {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
1&2&3
\end{array}}\\
{\begin{array}{*{20}{c}}
1&4&2
\end{array}}
\end{array}} \right]\\
AT = \left[ {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{ - 1}&{ - 4}&{ - 2}
\end{array}}\\
{\begin{array}{*{20}{c}}
1&2&3
\end{array}}
\end{array}} \right]\\
AAT = \left[ {\begin{array}{*{20}{c}}
{\begin{array}{*{20}{c}}
{ - 1}&{ - 2}&{ - 3}
\end{array}}\\
{\begin{array}{*{20}{c}}
{ - 1}&{ - 4}&{ - 2}
\end{array}}
\end{array}} \right]
\end{array}\]

Answer 22

Thanks FSM:D

Answer 23

but like how wld i explain the transformation?

Answer 24

i dont know, may be you could construct some ideas from that.. sorry

Answer 25

i think in the a) AT; the triange rotates

Answer 26

Thnaks :D

Answer 27

I drew all the triangles on a graph

Answer 28

and in AAT; it rotates again?

Answer 29

So it easier to see what happennned

Answer 30

AAT it gets flipped in the y an dthen x axis

Answer 31

It gets mirrored in the y=-x axis

Answer 32

but AT is confusing

Answer 33

It get mirrored in the y axis

Answer 34

but then there seems to be another transformation

Answer 35

i think it also he inverse

Answer 36

I am not sure and doesnt seem like any1 else is either

Answer 37

Thanks that was helpful :D

Answer 38

thanks it was a really good question

Answer 39

A is rotating the triangle 90º counter clockwise around the origin. Notice that 2 of the rotations gives you 180º