anonymous
  • anonymous
Can someone please help me with a matrice question?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
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anonymous
  • anonymous
I got the answer as to what the vertices of th etriangle wld be but like does the transformation represent?
anonymous
  • anonymous
Please don't use doc. just copy and paste question and chooses

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anonymous
  • anonymous
lol whtvr I used a pdf and most ppl dont have an issue with that
anonymous
  • anonymous
It is coming from a pdf format so I have to print screen it
anonymous
  • anonymous
Can u help me?
anonymous
  • anonymous
huh
anonymous
  • anonymous
ok i will try :/
anonymous
  • anonymous
LOL ppl can help
anonymous
  • anonymous
k
anonymous
  • anonymous
im "traying to try"
anonymous
  • anonymous
lol
phi
  • phi
Do you know how to do the matrix multiplication?
anonymous
  • anonymous
rows by columns?
anonymous
  • anonymous
yes
anonymous
  • anonymous
I did that
anonymous
  • anonymous
I got the answer of the points of the triangle but i need to know abt the transformation
anonymous
  • anonymous
you need to represent the transformation as a triangle?
anonymous
  • anonymous
how it see pictorially?
anonymous
  • anonymous
ummm ok they gave you the points of the traingle and then it asks u to transform by multiplying it by matrix A
anonymous
  • anonymous
I was able to get the points of the two transformed triangles but i dont get what the transformation is
anonymous
  • anonymous
tl;dr \[\Large \begin{array}{l} A = \left[ {\begin{array}{*{20}{c}} 0&{ - 1}\\ 1&0 \end{array}} \right]\\ T = \left[ {\begin{array}{*{20}{c}} {\begin{array}{*{20}{c}} 1&2&3 \end{array}}\\ {\begin{array}{*{20}{c}} 1&4&2 \end{array}} \end{array}} \right]\\ AT = \left[ {\begin{array}{*{20}{c}} {\begin{array}{*{20}{c}} { - 1}&{ - 4}&{ - 2} \end{array}}\\ {\begin{array}{*{20}{c}} 1&2&3 \end{array}} \end{array}} \right]\\ AAT = \left[ {\begin{array}{*{20}{c}} {\begin{array}{*{20}{c}} { - 1}&{ - 2}&{ - 3} \end{array}}\\ {\begin{array}{*{20}{c}} { - 1}&{ - 4}&{ - 2} \end{array}} \end{array}} \right] \end{array}\]
anonymous
  • anonymous
Thanks FSM:D
anonymous
  • anonymous
but like how wld i explain the transformation?
anonymous
  • anonymous
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anonymous
  • anonymous
i dont know, may be you could construct some ideas from that.. sorry
anonymous
  • anonymous
i think in the a) AT; the triange rotates
anonymous
  • anonymous
Thnaks :D
anonymous
  • anonymous
I drew all the triangles on a graph
anonymous
  • anonymous
and in AAT; it rotates again?
anonymous
  • anonymous
So it easier to see what happennned
anonymous
  • anonymous
AAT it gets flipped in the y an dthen x axis
anonymous
  • anonymous
It gets mirrored in the y=-x axis
anonymous
  • anonymous
but AT is confusing
anonymous
  • anonymous
It get mirrored in the y axis
anonymous
  • anonymous
but then there seems to be another transformation
anonymous
  • anonymous
i think it also he inverse
anonymous
  • anonymous
I am not sure and doesnt seem like any1 else is either
anonymous
  • anonymous
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anonymous
  • anonymous
Thanks that was helpful :D
anonymous
  • anonymous
thanks it was a really good question
phi
  • phi
A is rotating the triangle 90º counter clockwise around the origin. Notice that 2 of the rotations gives you 180º

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